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JavaScript For 循环(js for)
如何在html中调用JS文件
Google的js判断密码强度
作者:admin 日期:2010-03-26
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html" />
<title>无标题文档</title>
<script>
ratingMsgs = new Array(6);
ratingMsgColors = new Array(6);
barColors = new Array(6);
ratingMsgs[0] = "太短";
ratingMsgs[1] = "弱";
ratingMsgs[2] = "一般";
ratingMsgs[3] = "很好";
ratingMsgs[4] = "极佳";
ratingMsgs[5] = "未评级"; //If the password server is down
ratingMsgColors[0] = "#676767";
ratingMsgColors[1] = "#aa0033";
ratingMsgColors[2] = "#f5ac00";
ratingMsgColors[3] = "#6699cc";
ratingMsgColors[4] = "#008000";
ratingMsgColors[5] = "#676767";
barColors[0] = "#dddddd";
barColors[1] = "#aa0033";
barColors[2] = "#ffcc33";
barColors[3] = "#6699cc";
barColors[4] = "#008000";
barColors[5] = "#676767";
function CreateRatePasswdReq(pwd) {
if (!isBrowserCompatible) {
return;
}
// if(!document.getElementById) return false;
// var pwd = document.getElementById("pwd");
if(!pwd) return false;
passwd=pwd.value;
var min_passwd_len = 6;
if (passwd.length < min_passwd_len) {
if (passwd.length > 0) {
DrawBar(0);
} else {
ResetBar();
}
} else {
//We need to escape the password now so it won't mess up with length test
rating = checkPasswdRate(passwd);
DrawBar(rating);
}
}
function getElement(name) {
if (document.all) {
return document.all(name);
}
return document.getElementById(name);
}
function DrawBar(rating) {
var posbar = getElement('posBar');
var negbar = getElement('negBar');
var passwdRating = getElement('passwdRating');
var barLength = getElement('passwdBar').width;
if (rating >= 0 && rating <= 4) { //We successfully got a rating
posbar.style.width = barLength / 4 * rating + "px";
negbar.style.width = barLength / 4 * (4 - rating) + "px";
} else {
posbar.style.width = "0px";
negbar.style.width = barLength + "px";
rating = 5; // Not rated Rating
}
posbar.style.background = barColors[rating];
passwdRating.innerHTML = "<font color='" + ratingMsgColors[rating] +
"'>" + ratingMsgs[rating] + "</font>";
}
//Resets the password strength bar back to its initial state without any message showing.
function ResetBar() {
var posbar = getElement('posBar');
var negbar = getElement('negBar');
var passwdRating = getElement('passwdRating');
var barLength = getElement('passwdBar').width;
posbar.style.width = "0px";
negbar.style.width = barLength + "px";
passwdRating.innerHTML = "";
}
/* Checks Browser Compatibility */
var agt = navigator.userAgent.toLowerCase();
var is_op = (agt.indexOf("opera") != -1);
var is_ie = (agt.indexOf("msie") != -1) && document.all && !is_op;
var is_mac = (agt.indexOf("mac") != -1);
var is_gk = (agt.indexOf("gecko") != -1);
var is_sf = (agt.indexOf("safari") != -1);
function gff(str, pfx) {
var i = str.indexOf(pfx);
if (i != -1) {
var v = parseFloat(str.substring(i + pfx.length));
if (!isNaN(v)) {
return v;
}
}
return null;
}
function Compatible() {
if (is_ie && !is_op && !is_mac) {
var v = gff(agt, "msie ");
if (v != null) {
return (v >= 6.0);
}
}
if (is_gk && !is_sf) {
var v = gff(agt, "rv:");
if (v != null) {
return (v >= 1.4);
} else {
v = gff(agt, "galeon/");
if (v != null) {
return (v >= 1.3);
}
}
}
if (is_sf) {
var v = gff(agt, "applewebkit/");
if (v != null) {
return (v >= 124);
}
}
return false;
}
/* We also try to create an xmlhttp object to see if the browser supports it */
var isBrowserCompatible = Compatible();
//CharMode函数
//测试某个字符是属于哪一类.
function CharMode(iN){
if (iN>=48 && iN <=57) //数字
return 1;
if (iN>=65 && iN <=90) //大写字母
return 2;
if (iN>=97 && iN <=122) //小写
return 4;
else
return 8; //特殊字符
}
//bitTotal函数
//计算出当前密码当中一共有多少种模式
function bitTotal(num){
modes=0;
for (i=0;i<4;i++){
if (num & 1) modes++;
num>>>=1;
}
return modes;
}
//checkStrong函数
//返回密码的强度级别
function checkPasswdRate(sPW){
if (sPW.length<=4)
return 0; //密码太短
Modes=0;
for (i=0;i<sPW.length;i++){
//测试每一个字符的类别并统计一共有多少种模式.
Modes|=CharMode(sPW.charCodeAt(i));
}
return bitTotal(Modes);
}
</script>
</head>
<body>
<table>
<tbody>
<tr>
<td>密码：</td>
<td><input id=pwd onkeyup=CreateRatePasswdReq(this); type=password value=""> <span style="FONT-FAMILY: arial,sans-serif">长度必须最少包含 6 个字
符。</span>
<table cellSpacing=0 cellPadding=0 border=0>
<tbody>
<tr>
<td vAlign=top noWrap width=0><font face="Arial, sans-serif" size=-1>密码强度： </font></td>
<td vAlign=top noWrap><font face="Arial, sans-serif" color=#808080 size=-1><strong>
<div id=passwdRating></div>
</strong></font></td>
</tr>
<tr>
<td height=3></td>
</tr>
<tr>
<td colSpan=2>
<table id=passwdBar cellSpacing=0 cellPadding=0 width=180 bgColor=#ffffff border=0>
<tbody>
<tr>
<td id=posBar width=0% bgColor=#e0e0e0 height=4></td>
<td id=negBar width="100%" bgColor=#e0e0e0 height=4></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</body>
</html>
<head>
<meta http-equiv="Content-Type" content="text/html" />
<title>无标题文档</title>
<script>
ratingMsgs = new Array(6);
ratingMsgColors = new Array(6);
barColors = new Array(6);
ratingMsgs[0] = "太短";
ratingMsgs[1] = "弱";
ratingMsgs[2] = "一般";
ratingMsgs[3] = "很好";
ratingMsgs[4] = "极佳";
ratingMsgs[5] = "未评级"; //If the password server is down
ratingMsgColors[0] = "#676767";
ratingMsgColors[1] = "#aa0033";
ratingMsgColors[2] = "#f5ac00";
ratingMsgColors[3] = "#6699cc";
ratingMsgColors[4] = "#008000";
ratingMsgColors[5] = "#676767";
barColors[0] = "#dddddd";
barColors[1] = "#aa0033";
barColors[2] = "#ffcc33";
barColors[3] = "#6699cc";
barColors[4] = "#008000";
barColors[5] = "#676767";
function CreateRatePasswdReq(pwd) {
if (!isBrowserCompatible) {
return;
}
// if(!document.getElementById) return false;
// var pwd = document.getElementById("pwd");
if(!pwd) return false;
passwd=pwd.value;
var min_passwd_len = 6;
if (passwd.length < min_passwd_len) {
if (passwd.length > 0) {
DrawBar(0);
} else {
ResetBar();
}
} else {
//We need to escape the password now so it won't mess up with length test
rating = checkPasswdRate(passwd);
DrawBar(rating);
}
}
function getElement(name) {
if (document.all) {
return document.all(name);
}
return document.getElementById(name);
}
function DrawBar(rating) {
var posbar = getElement('posBar');
var negbar = getElement('negBar');
var passwdRating = getElement('passwdRating');
var barLength = getElement('passwdBar').width;
if (rating >= 0 && rating <= 4) { //We successfully got a rating
posbar.style.width = barLength / 4 * rating + "px";
negbar.style.width = barLength / 4 * (4 - rating) + "px";
} else {
posbar.style.width = "0px";
negbar.style.width = barLength + "px";
rating = 5; // Not rated Rating
}
posbar.style.background = barColors[rating];
passwdRating.innerHTML = "<font color='" + ratingMsgColors[rating] +
"'>" + ratingMsgs[rating] + "</font>";
}
//Resets the password strength bar back to its initial state without any message showing.
function ResetBar() {
var posbar = getElement('posBar');
var negbar = getElement('negBar');
var passwdRating = getElement('passwdRating');
var barLength = getElement('passwdBar').width;
posbar.style.width = "0px";
negbar.style.width = barLength + "px";
passwdRating.innerHTML = "";
}
/* Checks Browser Compatibility */
var agt = navigator.userAgent.toLowerCase();
var is_op = (agt.indexOf("opera") != -1);
var is_ie = (agt.indexOf("msie") != -1) && document.all && !is_op;
var is_mac = (agt.indexOf("mac") != -1);
var is_gk = (agt.indexOf("gecko") != -1);
var is_sf = (agt.indexOf("safari") != -1);
function gff(str, pfx) {
var i = str.indexOf(pfx);
if (i != -1) {
var v = parseFloat(str.substring(i + pfx.length));
if (!isNaN(v)) {
return v;
}
}
return null;
}
function Compatible() {
if (is_ie && !is_op && !is_mac) {
var v = gff(agt, "msie ");
if (v != null) {
return (v >= 6.0);
}
}
if (is_gk && !is_sf) {
var v = gff(agt, "rv:");
if (v != null) {
return (v >= 1.4);
} else {
v = gff(agt, "galeon/");
if (v != null) {
return (v >= 1.3);
}
}
}
if (is_sf) {
var v = gff(agt, "applewebkit/");
if (v != null) {
return (v >= 124);
}
}
return false;
}
/* We also try to create an xmlhttp object to see if the browser supports it */
var isBrowserCompatible = Compatible();
//CharMode函数
//测试某个字符是属于哪一类.
function CharMode(iN){
if (iN>=48 && iN <=57) //数字
return 1;
if (iN>=65 && iN <=90) //大写字母
return 2;
if (iN>=97 && iN <=122) //小写
return 4;
else
return 8; //特殊字符
}
//bitTotal函数
//计算出当前密码当中一共有多少种模式
function bitTotal(num){
modes=0;
for (i=0;i<4;i++){
if (num & 1) modes++;
num>>>=1;
}
return modes;
}
//checkStrong函数
//返回密码的强度级别
function checkPasswdRate(sPW){
if (sPW.length<=4)
return 0; //密码太短
Modes=0;
for (i=0;i<sPW.length;i++){
//测试每一个字符的类别并统计一共有多少种模式.
Modes|=CharMode(sPW.charCodeAt(i));
}
return bitTotal(Modes);
}
</script>
</head>
<body>
<table>
<tbody>
<tr>
<td>密码：</td>
<td><input id=pwd onkeyup=CreateRatePasswdReq(this); type=password value=""> <span style="FONT-FAMILY: arial,sans-serif">长度必须最少包含 6 个字
符。</span>
<table cellSpacing=0 cellPadding=0 border=0>
<tbody>
<tr>
<td vAlign=top noWrap width=0><font face="Arial, sans-serif" size=-1>密码强度： </font></td>
<td vAlign=top noWrap><font face="Arial, sans-serif" color=#808080 size=-1><strong>
<div id=passwdRating></div>
</strong></font></td>
</tr>
<tr>
<td height=3></td>
</tr>
<tr>
<td colSpan=2>
<table id=passwdBar cellSpacing=0 cellPadding=0 width=180 bgColor=#ffffff border=0>
<tbody>
<tr>
<td id=posBar width=0% bgColor=#e0e0e0 height=4></td>
<td id=negBar width="100%" bgColor=#e0e0e0 height=4></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</body>
</html>
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