核心提示：!DOCTYPE htmlhtmlhead title注册/title style*{margin:0;padding:0 }body{font-size:20px;} #allcontent{wid...
<!DOCTYPE html>
<html>
<head>
<title>注册</title>
<style>
*{margin:0;
padding:0
}
body{font-size:20px;}
#allcontent{
width:1024px;
padding:15px;
margin:100px auto 0;
border: 1px dashed orange
}
p{display:inline;
margin-left:10px
}
#count{visibility:hidden;
margin-left:83px
}
#em{background:orange;
width:153px;
margin:3px 0 7px 60px
}
em{opacity:0.2;
display:inline-block;
width:51px;
text-align:center
}
em:first-child{background:orange;
opacity:1
}
.active{background:orange;
opacity:1
}
</style>
</head>
<body>
<form id="allcontent">
<p>
<label><b>会员名：</b><input type="text"></label><p>5-25个字符，一个汉字为两个字符，推荐使用中文会员名。</p>
</p>
<p id="count">0个字符</p>
<p>
<label><b>密码：</b><input type="text"></label><p>6-16个字符，请使用字母加数字或符号的组合密码，不能单独使用字母、数字或符号。</p>
</p>
<p id="em">
<em>弱</em><em>中</em><em>强</em>
</p>
<p>
<label><b>确认密码：</b><input type="text" disabled></label><p></p>
</p>
</form>
<script>
function getLength(str){
// \x00-xff代表单字节字符。
return str.replace(/[^\x00-\xff]/g, "xx").length;
}
function findStr(str, n){
var tmp = 0;
for (var i = 0; i < str.length; i++){
if(str.charAt(i)==n){
tmp++;
}
}
return tmp;
}
window.onload=function(){
var aInput = document.getElementsByTagName('input');
var oName = aInput[0];
var pwd = aInput[1];
var pwd2 = aInput[2];
var aP = document.getElementsByTagName('p');
var name_msg = aP[0];
var pwd_msg = aP[1];
var pwd2_msg = aP[2];
var count = document.getElementById('count');
var aEm = document.getElementsByTagName('em');
var name_length = 0;
//会员名
oName.onfocus = function(){
name_msg.style.display = "inline";
name_msg.innerHTML = "<i class=‘ati’></i>5-25个字符，一个汉字为两个字符，推荐使用中文会员名。";
}
oName.onkeyup = function(){
count.style.visibility = "visible";
name_length = getLength(this.value);
count.innerHTML = name_length + "个字符";
if(name_length==0){
count.style.visibility = "hidden";
}
}
oName.onblur = function(){
//含有非法字符
var reg = /[^\w\u4e00-\u9fa5]/g; // \w代表“数字、字母（不分大小写）、下划线”，\u4e00-\u9fa5代表汉字。
if(reg.test(this.value)){
name_msg.innerHTML = '<i class="err"></i>含有非法字符！';
}
//不能为空
else if (this.value==""){
name_msg.innerHTML = "<i class='err'></i>不能为空！";
}
//长度超过25个字符
else if (name_length > 25){
name_msg.innerHTML = "<i class='err'></i>长度超过25个字符！";
}
//长度少于6个字符
else if (name_length < 6){
name_msg.innerHTML = "<i class='err'></i>长度少于6个字符！";
}
//OK
else {
name_msg.innerHTML = "<i class='err'></i>OK！";
count.style.visibility = "hidden";
}
}
//密码
pwd.onfocus = function(){
pwd_msg.style.display = "inline";
pwd_msg.innerHTML = '<i class="ati"></i>6-16个字符，请使用字母加数字或符号的组合密码，不能单独使用字母、数字或符号。'
}
pwd.onkeyup = function(){
//大于5字符为“中”
if(this.value.length>5){
aEm[1].className = "active";
pwd2.removeAttribute("disabled");
pwd2_msg.style.display = "inline";
}else{
aEm[1].className = "";
pwd2.setAttribute("disabled");
pwd2_msg.style.display = "none";
}
//大于10字符为“强”
if(this.value.length>10){
aEm[2].className = "active";
}else{
aEm[2].className = "";
}
}
pwd.onblur = function(){
var m = findStr(pwd.value, pwd.value[0]);
var reg_n = /[^\d]/g;
var reg_c = /[^a-zA-Z]/g;
//不能为空
if(this.value==""){
pwd_msg.innerHTML = '<i class="err"></i>不能为空！';
}
//不能用相同字符
else if(m == this.value.length){
pwd_msg.innerHTML = '<i class="err"></i>不能用相同字符！';
}
//长度应为6-16个字符
else if(this.value.length < 6 || this.value.length > 16){
pwd_msg.innerHTML = '<i class="err"></i>长度应为6-16个字符！';
}
//不能全为数字
else if(!reg_n.test(this.value)){
pwd_msg.innerHTML = '<i class="err"></i>不能全为数字！';
}
//不能全为字母
else if(!reg_c.test(this.value)){
pwd_msg.innerHTML = '<i class="err"></i>不能全为字母！';
}
//OK
else{
pwd_msg.innerHTML = '<i class="ok"></i>OK！';
}
}
//确认密码
pwd2.onblur = function(){
if(this.value != pwd.value){
pwd2_msg.innerHTML = '<i class="err"></i>两次输入的密码不一致！';
}else{
pwd2_msg.innerHTML = '<i class="ok"></i>OK！';
}
}
}
</script>
</body>
</html>
