復制代碼 代碼如下:
<html>
<head>
<title>密碼強度檢測效果</title>
<script type="text/javascript">
function chkpwd(obj){
var t=obj.value;
var id=getResult(t);
//定義對應的消息提示
var msg=new Array(4);
msg[0]="密碼過短。";
msg[1]="密碼強度差。";
msg[2]="密碼強度良好。";
msg[3]="密碼強度高。";
var sty=new Array(4);
sty[0]=-45;
sty[1]=-30;
sty[2]=-15;
sty[3]=0;
var col = new Array(4);
col[0] = "gray";
col[1] = "#50AEDD";
col[2] = "#FF8213";
col[3] = "green";
//設置顯示效果
var bImg="http://download.jz123.cn/sc/pwdlen_dSIPeEGQWxfO.gif" //一張顯示用的圖片
var sWidth=300;
var sHeight=15;
var Bobj=document.getElementById("chkResult");
Bobj.style.fontSize="12px";
Bobj.style.color=col[id];
Bobj.style.width=sWidth + "px";
Bobj.style.height=sHeight + "px";
Bobj.style.lineHeight=sHeight + "px";
Bobj.style.background="url(" + bImg + ") no-repeat left " + sty[id] + "px";
Bobj.style.textIndent="20px";
Bobj.innerHTML="檢測提示：" + msg[id];
}
//定義檢測函數,返回0/1/2/3分別代表無效/差/一般/強
function getResult(s){
if(s.length < 4){
return 0;
}
var ls = 0;
if (s.match(/[a-z]/ig)){
ls++;
}
if (s.match(/[0-9]/ig)){
ls++;
}
if (s.match(/(.[^a-z0-9])/ig)){
ls++;
}
if (s.length < 6 && ls > 0){
ls--;
}
return ls
}
</script>
</head>
<body>
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<form name="form1">
<label for="pwd">用戶密碼</label>
<input type="password" name="pwd" onKeyUp="chkpwd(this)" />
<div id="chkResult"></div>
</form>
</body>
</html>