jQuery 自定义下拉框(DropDown)附源码下载

<section class="main">
<div class="wrapper-demo">
<div id="dd" class="wrapper-dropdown-1" tabindex="1">
<span>手册网</span>
<ul class="dropdown" tabindex="">
<li><a href="#">jQuery特效</a></li>
<li><a href="#">网站模板</a></li>
</ul>
</div>
</div>
</section>
</div>
<script type="text/javascript" src="http://libs.useso.com/js/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
function DropDown(el) {
this.dd = el;
this.placeholder = this.dd.children('span');
this.opts = this.dd.find('ul.dropdown > li');
this.val = '';
this.index = -;
this.initEvents();
}
DropDown.prototype = {
initEvents: function() {
var obj = this;
obj.dd.on('click', function(event) {
$(this).toggleClass('active');
return false;
});
obj.opts.on('click', function() {
var opt = $(this);
obj.val = opt.text();
obj.index = opt.index();
obj.placeholder.text('Gender: ' + obj.val);
});
},
getValue: function() {
return this.val;
},
getIndex: function() {
return this.index;
}
}
$(function() {
var dd = new DropDown($('#dd'));
$(document).click(function() {
$('.wrapper-dropdown-1').removeClass('active');
});
});
</script>

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