JS 验证表单 JS提交验证类(转)

待我称王封你为后i 2022-02-22 00:59 306阅读 0赞

**附加：js验证radio是否选择**

alert("请选择")  
return false;

\}  
</script>  
<form id="form1" name="form1" method="post" action=""   οnsubmit="return checkform(this)">  
   <input type="radio" name="oo" value="radiobutton" />  
   <input type="radio" name="oo" value="radiobutton" />  
   <input type="submit" name="Submit" value="**提交**" />  
</form>

**1. 长度限制**  
<script>  
function test()  
\{  
if(document.a.b.value.length>50)  
\{  
alert("不能超过50个字符！");  
document.a.b.focus();  
return false;  
\}  
\}  
</script>  
<form name=a οnsubmit="return test()">  
<textarea name="b" cols="40" wrap="VIRTUAL" rows="6"></textarea>  
<input type="submit" name="Submit" value="check">  
</form>  
  
**2. 只能是汉字**  
<input οnkeyup="value="/oblog/value.replace(/\[^\\u4E00-\\u9FA5\]/g,'')">  
  
**3." 只能是英文**  
<script language=javascript>  
function onlyEng()  
\{  
if(!(event.keyCode>=65&&event.keyCode<=90))  
event.returnvalue=false;  
\}  
</script>  
  
<input οnkeydοwn="onlyEng();">  
  
**4. 只能是数字**  
<script language=javascript>  
function onlyNum()  
\{  
if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))  
//考虑小键盘上的数字键  
event.returnvalue=false;  
\}  
</script>  
  
<input οnkeydοwn="onlyNum();">  
  
**5. 只能是英文字符和数字**  
<input οnkeyup="value="/oblog/value.replace(/\[\\W\]/g,"'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/\[^\\d\]/g,''))">  
  
**6. 验证油箱格式**  
<SCRIPT LANGUAGE=javascript RUNAT=Server>  
function isEmail(strEmail) \{  
if (strEmail.search(/^\\w+((-\\w+)|(\\.\\w+))\*\\@\[A-Za-z0-9\]+((\\.|-)\[A-Za-z0-9\]+)\*\\.\[A-Za-z0-9\]+$/) != -1)  
return true;  
else  
alert("oh");  
\}  
</SCRIPT>  
<input type=text οnblur=isEmail(this.value)>  
  
**7. 屏蔽关键字(这里屏蔽\*\*\*和\*\*\*\*)**  
<script language="javascript1.2">  
function test() \{  
if((a.b.value.indexOf ("\*\*\*") == 0)||(a.b.value.indexOf ("\*\*\*\*") == 0))\{  
alert("![点击图片可在新窗口打开][smile.gif]");  
a.b.focus();  
return false;\}  
\}  
</script>  
<form name=a οnsubmit="return test()">  
<input type=text name=b>  
<input type="submit" name="Submit" value="check">  
</form>  
  
**8. 两次输入密码是否相同**  
<FORM METHOD=POST ACTION="">  
<input type="password" id="input1">  
<input type="password" id="input2">  
<input type="button" value="test" οnclick="check()">  
</FORM>  
<script>  
function check()  
\{  
with(document.all)\{  
if(input1.value!=input2.value)  
\{  
alert("false")  
input1.value = "";  
input2.value = "";  
\}  
else document.forms\[0\].submit();  
\}  
\}  
</script>  
够了吧![点击图片可在新窗口打开][smile.gif]  
屏蔽右键 很酷  
οncοntextmenu="return false" οndragstart="return false" onselectstart="return false"  
加在body中  
  
  
**二**  
  
**2.1     表单项不能为空**  
  
<script     language="javascript">  
  
</script>  
  
**2.2     比较两个表单项的值是否相同**  
  
<script     language="javascript">  
  
</script>  
  
**2.3     表单项只能为数字和"\_",用于电话/银行帐号验证上,可扩展到域名注册等**  
  
<script     language="javascript">  
  
</script>  
  
  
**2.4     表单项输入数值/长度限定**  
  
<script     language="javascript">  
  
</script>  
  
**2.5     中文/英文/数字/邮件地址合法性判断**  
  
<SCRIPT     LANGUAGE="javascript">  
  
</SCRIPT>  
  
**2.6     限定表单项不能输入的字符**  
  
<script     language="javascript">  
  
</script>

[smile.gif]: http://images.5d6d.com/orig/smilies/smile.gif