检验密码强度的JS类

<script type="text/javascript">
var PasswordStrength ={
Level : ["高，实在是高","还行啦","靠，这样也行"],
LevelValue : [30,20,0],//强度值
Factor : [1,2,5],//字符加数,分别为字母，数字，其它
KindFactor : [0,0,10,20],//密码含几种组成的加数
Regex : [/[a-zA-Z]/g,/\d/g,/[^a-zA-Z0-9]/g] //字符正则数字正则其它正则
}
PasswordStrength.StrengthValue = function(pwd)
{
var strengthValue = 0;
var ComposedKind = 0;
for(var i = 0 ; i < this.Regex.length;i++)
{
var chars = pwd.match(this.Regex[i]);
if(chars != null)
{
strengthValue += chars.length * this.Factor[i];
ComposedKind ++;
}
}
strengthValue += this.KindFactor[ComposedKind];
return strengthValue;
}
PasswordStrength.StrengthLevel = function(pwd)
{
var value = this.StrengthValue(pwd);
for(var i = 0 ; i < this.LevelValue.length ; i ++)
{
if(value >= this.LevelValue[i] )
return this.Level[i];
}
}

alert(PasswordStrength.StrengthLevel("23"));
alert(PasswordStrength.StrengthLevel("abcd123"));
alert(PasswordStrength.StrengthLevel("abcd!%23"));
</script>