JavaScript 入门基础 (五)

矫情吗；* 2022-05-29 02:17 236阅读 0赞

**目录**

--------------------

[1、JavaScript概述][1_JavaScript]

[2、HTML世界][2_HTML]

[3、JavaScript基本语法][3_JavaScript]

[4、JavaScript语句][4_JavaScript]

[5、JavaScript内置对象][5_JavaScript]

[6、Document对象][6_Document]

[7、window和frame][7_window_frame]

[8、表单对象][8]

[9、了解其他常用对象][9]

**JavaScript内置对象**

--------------------

5.1 JavaScript对象初探

什么是对象

内置对象

Math、Date、String、Array、Number、Boolean、Function、Global、Object、RegExp、Event

5.2 Math对象

<table style="direction:ltr; border-collapse:collapse; border-style:solid; border-color:#A3A3A3; border-width:1pt; margin-left:.3333in"> 
 <tbody> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> 方法 </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 功能说明 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> sin(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的正弦值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> cos(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的余弦值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> tan(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的正切值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> asin(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的反正弦值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> acos(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的反余弦值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> atan(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的反正切值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> atan2(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回坐标num1，num2对应的极坐标角度 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> abs(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的绝对值 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> exp(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回自然对数E的num次方 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> log(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的自然对数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> sqrt(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num的平法根 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> pow(num1,num2) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num1的num2次方 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> round(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num四舍五入的取整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> random() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回一个0到1之间的随机数，不包括1 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> ceil(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回大于或等于参数num的最小整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> floor(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回大于或等于参数num的最大整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> max(num1,num2) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num1和num2中的较大的数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> min(num1,num2) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回参数num1和num2中的较小的数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.2506in; padding:4pt 4pt 4pt 4pt"> toString() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.7583in; padding:4pt 4pt 4pt 4pt"> 返回表示该对象的字符串 </td> 
 </tr> 
 </tbody> 
</table>

5.3 new运算符和对象操作语句

使用new运算符

nonth=newArray();//创建一个数组变量month

deletemonth(2);//删除month的第3个单元

使用对象操作语句

r1=Math.round(Math.random()\*10);

r2=Math.round(Math.random()\*10);

r3=Math.round(Math.random()\*10);

对于每个Math对象的每个方法都要在前面写上Math，可以写成如下格式，效果一样

with(Math)\{

r1=round(random()\*10);

r2=round(random()\*10);

r3=round(random()\*10);

5.4进一步使用Array对象

Array对象的属性和方法

5.5 String对象

5.1属性和方法

<table style="direction:ltr; border-collapse:collapse; border-style:solid; border-color:#A3A3A3; border-width:1pt; margin-left:.7076in"> 
 <tbody> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> 方法 </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 功能说明 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> char(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数num指定索引位置处的字符。从左到右索引，开始处为0 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> charCodeAt(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数num指定索引位置处的字符的ISO-latin-1值。从左到右索引，开始处为0 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> indexOf(string[,num]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数string在字符串中出现的初始位置。如果指定了num，则表示从索引num处开始查找，否则查找从0处开始 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> lastIndexOf(string[,num]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数string在字符串中出现的初始位置。如果指定了num，则表示从索引num处开始查找，与indexOf方法不同的是，此方法从后往前查找字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> substring(num1,[,num2]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 如果指定了两个参数num1和num2，返回在字符串中num1和num2之间的字符串。如果只有一个参数，则返回从该位置到字符串末尾的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> substr(num1[,num2]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 如果指定了两个参数num1和num2，返回在字符串中num1和num2大于string.length,则它被当做string.length;如果num1=num2，则返回空字符串，如果只指定了一个参数num1，则返回从该位置到字符串结尾处的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> split(regexpression,num)Split(separator[,num]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 根据参数传入的正则表达式或者分隔调用此方法的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> toUpperCase() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将字符串中的所有字符全部返回大写字符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> toLowerCase() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将字符串中的所有字符全部返回为小写字符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> valueOf() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回对象的原始值，对于string对象，也就是返回字符串本身 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> concat(string) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将参数string传过来的字符串加到当前字符串的末尾，并返回新的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> slice(num1[,num2]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回字符串中从索引num1到索引num2之间的字符串。如果num2是负数，则从字符串结束位置向前num2个字符的位置是返回字符串的结束位置。如果只指定一个参数num1，则返回从该索引字符串结束之间的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> char(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数num指定索引位置处的字符。从左到右索引，开始处为0 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> charCodeAt(num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数num指定索引位置处的字符的ISO-latin-1值。从左到右索引，开始处为0 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> indexOf(string[,num]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数string在字符串中出现的初始位置。如果指定了num，则表示从索引num处开始查找，否则查找从0处开始 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> lastIndexOf(string[,num]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 返回参数string在字符串中出现的初始位置。如果指定了num，则表示从索引num处开始查找，与indexOf方法不同的是，此方法从后往前查找字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> substring(num1,[,num2]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 如果指定了两个参数num1和num2，返回在字符串中num1和num2之间的字符串。如果只有一个参数，则返回从该位置到字符串末尾的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> substr(num1[,num2]) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 如果指定了两个参数num1和num2，返回在字符串中num1和num2大于string.length,则它被当做string.length;如果num1=num2，则返回空字符串，如果只指定了一个参数num1，则返回从该位置到字符串结尾处的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> split(regexpression,num) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 根据参数传入的正则表达式或者分隔调用此方法的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> match(regexpression) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 这个方法可以使用指定的正则表达式来搜索字符串。它是通过查找参数regexpression传入的正则表达式所指定的字符串，返回包含在字符串中找到的所有匹配的一个数组 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> replace(regexpression,replacestring) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 在调用此方法的字符串中查找通过参数regexpression传入的正则表达式所指定的字符串，如果在字符串中找到一个匹配，则它就返回出参数regexpression替换匹配之后的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> search(reggexpression) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 在调用此放置的字符串中查找通过参数regexpression传入的正则表达式所指定的字符串，返回匹配开始字符串中的索引，如果没有找到匹配，则返回-1 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> toString() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 如果直接调用此方法，则返回构造函数。如果是在字符串实例中调用此方法，则返回可创建实例时的源字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> big() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用大体字显示，相当于为字符串添加&lt;BIG&gt;&lt;/BIG&gt;标记符号 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> bolg() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用黑体字显示，相当于为字符串添加&lt;B&gt;&lt;/B&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> fixed() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用等宽字体显示，相当于字符串添加&lt;TT&gt;&lt;/TT&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> fontcolor(hexnum) fontcolor(cloorname) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用参数所设置的颜色显示，相当于为字符串添加&lt;FONT color=""&gt;&lt;/FONT&gt;标记符 。参数可以使表示颜色的十六进制值，也可以是浏览器能够识别的颜色的名称 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> fontsize(num) fontsize(String) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用参数所设置的字体大小显示，相当于为字符串添加&lt;FONT size=""&gt;&lt;/FONT&gt;标记符，参数1-7之间的数字，也可以是以字符串形式传入的数字。如果使用字符串数字，则字体大小要取BASEFONT大小的相对倍数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> italics() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用斜体字显示，相当于为字符串添加&lt;I&gt;&lt;/I&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> small() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用小体字显示，相当于为字符串添加&lt;SMALL&gt;&lt;/SMALL&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> strike() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用删除线格式显示，相当于为字符串添加&lt;STRIKE&gt;&lt;/STRIKE&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> sub() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用下标格式显示，相当于为字符串添加&lt;SUB&gt;&lt;/SUB&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> sup() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串用上标格式显示，相当于为字符串添加&lt;SUB&gt;&lt;/SUB&gt;标记符 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> anchor(name) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串转换成一个&lt;A&gt;标记符的实例，用参数name设置NAME属性。这相当于字符串用&lt;A NAME=name&gt;&lt;/A&gt;进行标记。它用来创建一个链接目标 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:1.5923in; padding:4pt 4pt 4pt 4pt"> link(URL) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:5.1812in; padding:4pt 4pt 4pt 4pt"> 将调用此方法的字符串转换成一个&lt;A&gt;标记符的实例，用参数URL设置HREF属性。这相当于将字符串用&lt;A HREF=URL&gt;&lt;/A&gt;进行标记 </td> 
 </tr> 
 </tbody> 
</table>

5.6 Date对象

Date对象的属性和方法

<table style="direction:ltr; border-collapse:collapse; border-style:solid; border-color:#A3A3A3; border-width:1pt; margin-left:.7076in"> 
 <tbody> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> 方法 </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 功能说明 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getDate() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前日期 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getDay() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前日期的天 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getMonth() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前日期的月份(0-11) </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getYear() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前日期的年，可以是两位也可以是4位 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getFullyear() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回完整的年，这个数是4位的 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getSeconds() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前时间的秒数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getMillseconds() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前时间的毫秒部分的整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getMinutes() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前时间的分总部分的整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getHours() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前时间的小时部分的整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getTime() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回当前的时间的毫秒数(从1970年1月1日到当前Date对象指定的时间之间的毫秒数) </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getTimeZoneOffset() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回以GMT为基准的时区偏差，以分钟计量 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCDate() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回表示转换成世界时间的月中的某一天(1-31) </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCDay() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回表示转换成世界时间的星期中的某一天（0-6，0表示星期日，6表示星期六） </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCMondth() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回用世界时间表示日期的月份(0-11) </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCFullyear() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回表示转换成世界时间的年的4位数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCSecond() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回用世界时间表示时间的秒数0-59 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCMillisecond() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回用世界时间表示时间的毫秒数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCMinutes() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回用世界时间表示时间的分钟数0-59 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> getUTCHours() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回用世界时间表示时间的小时数0-23 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setDate(day) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 以参数day(1-31的整数)指定的数设置Data对象中的日期数。返回从1970年1月1日凌晨到Date对象指定的日期和时间之间的毫秒数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setMonth(month) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date的月份数设置为参数month指定的整数0-11 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setYear(year) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date的年份数设置为参数year指定的整数这个可以是2位或4位的 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setFullYear(year) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date的年份数设置为参数year指定的4位数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setTime(milliseconds) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象的时间设置为参数milliseconds指定的整数。这个数表示从1970年1月1日凌晨到要设定时间之间的毫秒数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setHours(hour) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中的小时数设置为参数hours指定的整数0-23 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setMinutes(minutes) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中的分钟数设置为参数minutes指定的整数0-59 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setSeconds() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中的秒数设置为参数seconds指定的整数0-59 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setMillSeconds(milliseconds) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中的毫秒数设置为参数milliseconds指定的整数0-999 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> parse(date) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 从表示时间的字符串中返回时间，返回的是从1970年1月1日凌晨到参数Date指定的日期之间的毫秒数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> UTC(year,month,day,hours,minutes,seconds,milliseconds) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 与相应的Date对象类似，不过是用世界时间创建日期 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCDate(day) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得日期设置为参数day表示的一个整数(1-31) </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCFullyear(year) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得年份设置为参数year表示的4位整数 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCMonth(month) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得年份设置为参数month表示的一个整数0-11 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCHours(hours) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得年份设置为参数hours表示的一个整数0-23 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCMinutes(minutes) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得年份设置为参数minutes表示的一个整数0-59 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCSeconds(seconds) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得年份设置为参数seconds表示的一个整数0-59 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> setUTCMillSeconds(milliseconds) </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将Date对象中得年份设置为参数milliseconds表示的一个整数0-999 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> toString() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将时间信息返回为字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> toUTCString() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 将世界时间信息返回为字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> toLocalString() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 转换成以当地时间方式表示时间的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> toGMTString() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 转换成以格林威治时间表示时间的字符串 </td> 
 </tr> 
 <tr> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:2.1277in; padding:4pt 4pt 4pt 4pt"> valueOf() </td> 
 <td style="border-style:solid; border-color:#A3A3A3; border-width:1pt; vertical-align:top; width:4.6458in; padding:4pt 4pt 4pt 4pt"> 返回对象的原始值 </td> 
 </tr> 
 </tbody> 
</table>

提取日期和时间

要使用Date对象，首先要指定变量名，与String对象不同的是需要使用new运算符

变量名=newDate()

5.7 Global和Number

属性和方法

使用eval()

eval("document.write('我只是试一试')");

相当于执行语句document.write('我只是试一试')

使用Number对象

5.8使用Boolean和Function对象

Boolean对象

Boolean对象有一个属性prototype，用于为Boolean对象添加新的属性和方法。

Boolean对象有两个方法，toString()方法返回表示Boolean对象的逻辑字符串(true和false)。valueOf()方法返回Boolean对象的原始值

Function对象

Function对象可以将函数作为对象来进行访问，并且可以在程序执行的过程中动态地生成函数并且调用函数

5.9其他内置对象

Event

Object

RegExp

[1_JavaScript]: http://blog.csdn.net/zs15932616453/article/details/7915299
[2_HTML]: http://blog.csdn.net/zs15932616453/article/details/7919278
[3_JavaScript]: http://blog.csdn.net/zs15932616453/article/details/7939999
[4_JavaScript]: http://blog.csdn.net/zs15932616453/article/details/7948154
[5_JavaScript]: http://blog.csdn.net/zs15932616453/article/details/7956328
[6_Document]: http://blog.csdn.net/zs15932616453/article/details/7973112
[7_window_frame]: http://blog.csdn.net/zs15932616453/article/details/7989195
[8]: http://blog.csdn.net/zs15932616453/article/details/7989583
[9]: http://blog.csdn.net/zs15932616453/article/details/7985901