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jsp注册里密码强弱怎么弄

页面代码:

样式:

#pwdLever td

{

background-color:Gray;

width:45px;

text-align:center;

}

js代码:

window.onload = function () {

var textInput = document.getElementById("txtPwd");

//给密码输入框 注册键放开事件

textInput.onkeyup = function () {

var pwdValue = this.value;

var num = pwdChange(pwdValue);

var tds = document.getElementById("pwdLever").getElementsByTagName("td");

//修改密码颜色

if (num == 0 || num == 1) {

tds[0].style.backgroundColor = "red";

tds[1].style.backgroundColor = "gray";

tds[2].style.backgroundColor = "gray";

}

else if (num == 2) {

tds[0].style.backgroundColor = "red";

tds[1].style.backgroundColor = "red";

tds[2].style.backgroundColor = "gray";

}

else if (num == 3) {

tds[0].style.backgroundColor = "red";

tds[1].style.backgroundColor = "red";

tds[2].style.backgroundColor = "red";

}

else {

tds[0].style.backgroundColor = "gray";

tds[1].style.backgroundColor = "gray";

tds[2].style.backgroundColor = "gray";

}

}

}

function pwdChange(v) {

var num = 0;

var reg = /\d/; //如果有数字

if (reg.test(v)) {

num++;

}

reg = /[a-zA-Z]/; //如果有字母

if (reg.test(v)) {

num++;

}

reg = /[^0-9a-zA-Z]/; //如果有特殊字符

if (reg.test(v)) {

num++;

}

if (v.length < 6) { //如果密码小于6

num--;

}

return num;

}

本文标签: jsp注册里密码强弱怎么弄