2019独角兽企业重金招聘Python工程师标准>>> 
1、页面返回
<a class="retrun-btn" id="returnclick" href="">返回></a>对应的javascript为：
$(function(){
$("#returnclick").click(function(){
history.back(-1);
})
})或者直接
<input type="button" name="" onclick="javascript:history.back(-1);" value="返回">2、表单验证(jquery用的是本地的，验证正确和错误的图片也是本地的，重点是功能吧)
<html>
<head>
<style>
body { font:12px/19px Arial, Helvetica, sans-serif; color:#666;}
form div { margin:5px 0;}
.int label { float:left; width:100px; text-align:right;}
.int input { padding:1px 1px; border:1px solid #ccc;height:16px;}
.sub { padding-left:100px;}
.sub input { margin-right:10px; }
.formtips{width: 200px;margin:2px;padding:2px;}
.onError{
background:#FFE0E9 url(../img/reg3.gif) no-repeat 0 center;
padding-left:25px;
}
.onSuccess{
background:#E9FBEB url(../img/reg4.gif) no-repeat 0 center;
padding-left:25px;
}
.high{
color:red;
}
</style>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>表单验证</title>
<link href="style.css" rel="stylesheet" type="text/css" />
<!-- 引入jQuery -->
<script src="jquery-1.8.3.min.js"></script>
<script type="text/javascript">
$(function(){
//如果是必填的，则加红星标识.
$("form :input.required").each(function(){
var $required = $("<strong class='high'> *</strong>"); //创建元素
$(this).parent().append($required); //然后将它追加到文档中
});
//文本框失去焦点后
$('form :input').blur(function(){
var $parent = $(this).parent();
//此处的顺序不可以放到if判断之后
$parent.find(".formtips").remove();
//验证用户名
if( $(this).is('#username') ){
if( this.value=="" || this.value.length < 6 ){
var errorMsg = '请输入至少6位的用户名.';
$parent.append('<span class="formtips onError">'+errorMsg+'</span>');
}else{
var okMsg = '输入正确.';
$parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
}
}
//验证邮件
if( $(this).is('#email') ){
if( this.value=="" || ( this.value!="" && !/.+@.+\.[a-zA-Z]{2,4}$/.test(this.value) ) ){
var errorMsg = '请输入正确的E-Mail地址.';
$parent.append('<span class="formtips onError">'+errorMsg+'</span>');
}else{
var okMsg = '输入正确.';
$parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
}
}
}).keyup(function(){
$(this).triggerHandler("blur");
}).focus(function(){
$(this).triggerHandler("blur");
});
//提交，最终验证。
$('#send').click(function(){
$("form :input.required").trigger('blur');
var numError = $('form .onError').length;
if(numError){
return false;
}
alert("注册成功,密码已发到你的邮箱,请查收.");
});
//重置
$('#res').click(function(){
$(".formtips").remove();
});
})
</script>
</head>
<body>
<form method="post" action="">
<div class="int">
<label for="username">用户名:</label>
<input type="text" id="username" class="required" />
</div>
<div class="int">
<label for="email">邮箱:</label>
<input type="text" id="email" class="required" />
</div>
<div class="int">
<label for="personinfo">个人资料:</label>
<input type="text" id="personinfo" />
</div>
<div class="sub">
<input type="submit" value="提交" id="send"/><input type="reset" id="res"/>
</div>
</form>
</body>
</html>3、邮箱，时间域名自动补全
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>jQuery自动完成插件：completer</title>
<link rel="stylesheet" type="text/css" href="completer.css">
<style type="text/css">
.demo{width:360px;margin:50px auto 10px auto;padding:10px;}
.demo p{line-height:30px}
</style>
<script type="text/javascript" src="jquery-1.8.3.min.js"></script>
<script src="completer.min.js"></script>
<script type="text/javascript">
$(function(){
$("#auto-complete-email").completer({
separator: "@",
source: ["163.com", "qq.com", "126.com", "139.com", "gmail.com", "hotmail.com", "icloud.com"]
});
$("#auto-complete-time").completer({
filter: function(val) {
val = val.replace(/\D/g, "").substr(0, 2);
if (val) {
val = parseInt(val, 10) || 0;
val = val > 23 ? 23 : val < 10 ? "0" + val : val;
}
return val;
},
separator: ":",
source: ["00", "05", "10", "15", "20", "25", "30", "35", "40", "45", "50", "55"]
});
var $autoCompleteDomain = $("#auto-complete-domain"),
$autoCompleteGo = $("#auto-complete-go");
$autoCompleteDomain.completer({
complete: function() {
var url = "http://www." + $autoCompleteDomain.val();
$autoCompleteGo.attr("href", url);
},
separator: ".",
source: ["com", "net", "org", "co", "io", "me", "cn", "com.cn"]
});
});
</script>
</head>
<body>
<div id="main">
<div class="demo">
<p>1、输入邮箱号：</p>
<input type="text" id="auto-complete-email" class="form-control" placeholder="E-mail">
<p> </p>
<p>2、输入时间：</p>
<input type="text" id="auto-complete-time" class="form-control">
<p> </p>
<p>3、输入域名：</p>
<div class="input-group">
<span class="input-group-addon">www.</span>
<input id="auto-complete-domain" class="form-control" type="text" placeholder="请输入域名" autocomplete="off" style="z-index:0"> <span class="input-group-btn"><a id="auto-complete-go" class="btn btn-default" href="javascript:void(0);">Go!</a></span>
</div>
</div>
</div>
</body>
</html>上面的completer.css
.completer-container {
position: absolute;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
padding: 0;
margin: 0;
font-family: inherit;
font-size: 14px;
line-height: normal;
list-style: none;
background-color: #fff;
border: 1px solid #ccc;
border-bottom-color: #39f;
}
.completer-container li {
padding: .5em .8em;
margin: 0;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
cursor: pointer;
background-color: #fff;
border-bottom: 1px solid #eee;
}
.completer-container .completer-selected,
.completer-container li:hover {
margin-left: -1px;
background-color: #eee;
border-left: 1px solid #39f;
}completer.js
尼玛字符超过限制
有兴趣的可以看哈，
http://pan.baidu.com/s/1o7x37QU
