js随机密码产生函数

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; 
} 
 
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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