js判断只能输入数字和字母

淩亂°似流年 2022-01-17 03:43 470阅读 0赞

1.**限制只能输入数字**

$(document).ready(function()\{

$("\#tt").onlyNum();

\})

$.fn.onlyNum = function () \{

$(this).keypress(function (event) \{

var eventObj = event || e;

var keyCode = eventObj.keyCode || eventObj.which;

if ((keyCode >= 48 && keyCode <= 57))

return true;

else

return false;

\}).focus(function () \{

//禁用输入法

this.style.imeMode = 'disabled';

\}).bind("paste", function () \{

//获取剪切板的内容

var clipboard = window.clipboardData.getData("Text");

if (/^\\d+$/.test(clipboard))

return true;

else

return false;

\});

\};

2.**限制只能输入字母**

$.fn.onlyAlpha = function () \{  
$(this).keypress(function (event) \{  
var eventObj = event || e;  
var keyCode = eventObj.keyCode || eventObj.which;  
if ((keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <= 122))  
return true;  
else  
return false;  
\}).focus(function () \{  
this.style.imeMode = 'disabled';  
\}).bind("paste", function () \{  
var clipboard = window.clipboardData.getData("Text");  
if (/^\[a-zA-Z\]+$/.test(clipboard))  
return true;  
else  
return false;  
\});  
\};

3. 限制只能输入数字和字母

$.fn.onlyNumAlpha = function () \{  
$(this).keypress(function (event) \{  
var eventObj = event || e;  
var keyCode = eventObj.keyCode || eventObj.which;  
if ((keyCode >= 48 && keyCode <= 57) || (keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <= 122))  
return true;  
else  
return false;  
\}).focus(function () \{  
this.style.imeMode = 'disabled';  
\}).bind("paste", function () \{  
var clipboard = window.clipboardData.getData("Text");  
if (/^(\\d|\[a-zA-Z\])+$/.test(clipboard))  
return true;  
else  
return false;  
\});  
\};

转载于:https://blog.51cto.com/5618698/1709635