js随机密码产生函数_javascript技巧

复制代码 代码如下:

function randPassword()
{
var text=['abcdefghijklmnopqrstuvwxyz','ABCDEFGHIJKLMNOPQRSTUVWXYZ','1234567890','~!@#$%^&*()_+";",./?'];
var rand = function(min, max){return Math.floor(Math.max(min, Math.random() * (max+1)));}
var len = rand(8, 16); // 长度为8-16
var pw = '';
for(i=0; i{
var strpos = rand(0, 3);
pw += text[strpos].charAt(rand(0, text[strpos].length));
}
return pw;
}

测试代码:

<script type="text/javascript"> function randPassword() { var text=['abcdefghijklmnopqrstuvwxyz','ABCDEFGHIJKLMNOPQRSTUVWXYZ','1234567890','~!@#$%^&*()_+";",./?<>']; var rand = function(min, max){return Math.floor(Math.max(min, Math.random() * (max+1)));} var len = rand(8, 16); // 长度为8-16 var pw = ''; for(i=0; i<len; ++i) { var strpos = rand(0, 3); pw += text[strpos].charAt(rand(0, text[strpos].length)); } return pw; } alert(randPassword()); </script>
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