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<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>邮箱自动补全</title>
<style type="text/css">
.wrap{width:200px;margin:0 auto;}
h2{font-size:36px;text-align:center;line-height:60px;}
p{font-size:20px;text-align:center;line-height:60px;}
.inp{width:190px;border:1px solid #ccc;border-radius:5px;height:30px;line-height:30px;padding:5px;}
#AutoComplete{background:#fff;border:1px solid #4190db;display:none;width:200px;}
#AutoComplete ul{list-style-type:none;margin:0;padding:0;}
#AutoComplete li{color:#333;cursor:pointer;font:12px/22px \5b8b\4f53;text-indent:5px;}
#AutoComplete .hover{background:#6eb6fe;color:#fff;}
</style>
</head>
<body>
<h2>邮箱自动补全 + 上下翻动</h2>
<p>当在输入框内输入 @ 时,自动显示各个邮箱的下拉列表。</p>
<div class="wrap">
<form action="result.php" method="post">
<input type="text" name="email" id="email" class="inp" autocomplete="off"/><br/><br/>
<input type="text" name="other" class="inp" autocomplete="off"/><br/><br/>
<input type="submit" value="提交表单" id="submit"/>
</form>
</div>
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript">
jQuery.AutoComplete = function(selector){
var elt = $(selector);
var autoComplete,autoLi;
var strHtml = [];
strHtml.push('<div class="AutoComplete" id="AutoComplete">');
strHtml.push(' <ul class="AutoComplete_ul">');
strHtml.push(' <li class="AutoComplete_title">请选择邮箱后缀</li>');
strHtml.push(' <li hz="@qq.com"></li>');
strHtml.push(' <li hz="@163.com"></li>');
strHtml.push(' <li hz="@126.com"></li>');
strHtml.push(' <li hz="@sohu.com"></li>');
strHtml.push(' <li hz="@sina.com"></li>');
strHtml.push(' </ul>');
strHtml.push('</div>');
$('body').append(strHtml.join(''));
autoComplete = $('#AutoComplete');
autoComplete.data('elt',elt);
autoLi = autoComplete.find('li:not(.AutoComplete_title)');
autoLi.mouseover(function(){
$(this).siblings().filter('.hover').removeClass('hover');
$(this).addClass('hover');
}).mouseout(function(){
$(this).removeClass('hover');
}).mousedown(function(){
autoComplete.data('elt').val($(this).text()).change();
autoComplete.hide();
});
//用户名补全+翻动
elt.keyup(function(e){
if(/13|38|40|116/.test(e.keyCode) || this.value == ''){
return false;
}
var username = this.value;
if(username.indexOf('@') == -1){
autoComplete.hide();
return false;
}
autoLi.each(function(){
this.innerHTML = username.replace(/\@+.*/,'') + $(this).attr('hz');
if(this.innerHTML.indexOf(username) >= 0){
$(this).show();
}else{
$(this).hide();
}
}).filter('.hover').removeClass('hover');
autoComplete.show().css({
left: $(this).offset().left,
top: $(this).offset().top + $(this).outerHeight(true) - 1,
position: 'absolute',
zIndex: '99999'
});
if(autoLi.filter(':visible').length == 0){
autoComplete.hide();
}else{
autoLi.filter(':visible').eq(0).addClass('hover');
}
}).keydown(function(e){
if(e.keyCode == 38){ //上
autoLi.filter('.hover').prev().not('.AutoComplete_title').addClass('hover').next().removeClass('hover');
}else if(e.keyCode == 40){ //下
autoLi.filter('.hover').next().addClass('hover').prev().removeClass('hover');
}else if(e.keyCode == 13){ //Enter
autoLi.filter('.hover').mousedown();
e.preventDefault(); //如有表单,阻止表单提交
}
}).focus(function(){
autoComplete.data('elt',$(this));
}).blur(function(){
autoComplete.hide();
});
}
$(function(){
$.AutoComplete('#email');
});
</script>
</body>
</html>
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