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dropdown -02.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>下拉菜单</title>
<style>
[data-snake="select"] {
min-width: 100px;
height: 30px;
font-size: 18px;
/*border-radius: 5px;*/
}
</style>
<style>
.snake-drop {
position: relative;
display: inline-block;
}
.snake-drop .snake-drop-btn {
padding: 5px;
font-size: 20px;
background: #fff;
border-radius: 5px;
border: 1px solid #ddd;
}
.snake-drop .caret {}
.snake-drop .snake-drop-menu {
display: none;
position: absolute;
margin: 0;
padding: 0;
border: 1px solid #ddd;
box-shadow: 0px 8px 8px 1px #ddd;
background: #fff;
}
.snake-drop-hover .snake-drop-menu {
display: block;
}
.snake-drop .snake-drop-menu li {
list-style-type: none;
line-height: 25px;
cursor: pointer;
padding: 5px 20px 5px 10px;
}
.snake-drop .snake-drop-menu li:hover {
background: #ddd;
}
.snake-drop.down {}
.snake-drop.up {}
.snake-drop.down .caret {
display: inline-block;
width: 0;
height: 0;
margin-left: 2px;
vertical-align: middle;
border-top: 4px dashed;
border-top: 4px solid\9;
border-right: 4px solid transparent;
border-left: 4px solid transparent;
}
.snake-drop.up .caret {
display: inline-block;
width: 0;
height: 0;
margin-left: 2px;
vertical-align: middle;
border-top: 0;
border-bottom: 4px dashed;
border-bottom: 4px solid\9;
border-right: 4px solid transparent;
border-left: 4px solid transparent;
}
.snake-drop.dowm .snake-drop-menu {
top: 100%;
}
.snake-drop.up .snake-drop-menu {
bottom: 100%;
box-shadow: 0px -8px 8px 1px #ddd;
}
.btn-group {
display: inline-block;
border: 1px solid #ddd;
font-size: 0;
}
.btn-group >button {
line-height: 30px;
padding: 5px;
background: #fff;
border: 0;
border-right: 1px solid #ddd;
outline: none;
}
.btn-group >button:focus,
.btn-group >button:hover {
background: #ddd;
}
.btn-group >button:last-child {
border: 0;
}
</style>
</head>
<body>
<select data-snake="select" name="select" id="select">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<div id="select-value"></div>
<div id="dropdown" style="margin-top: 200px;">
<div class="snake-drop down" id="snake-dropdown-1">
<button class="snake-drop-btn">
<span class="snake-drop-text">drop1</span>
<span class="caret"></span>
</button>
<ul class="snake-drop-menu">
<li><a href="">drop1</a></li>
<li>drop2</li>
<li>drop3</li>
<li>drop4</li>
<li>drop5</li>
</ul>
</div>
<div class="snake-drop up" id="snake-dropdown-2">
<button class="snake-drop-btn">
<span class="snake-drop-text">drop1</span>
<span class="caret"></span>
</button>
<ul class="snake-drop-menu">
<li data-value="drop1">drop1</li>
<li data-value="drop2">drop2</li>
<li data-value="drop3">drop3</li>
<li data-value="drop4">drop4</li>
<li data-value="drop5">drop5</li>
</ul>
</div>
<button id="btn">show</button>
</div>
<br>
<div class="btn-group">
<button>btn1</button>
<button>btn1</button>
<button>btn1</button>
</div>
<br>
<br>
<style>
.input-group{
line-height: 30px;
}
.input-group{
font-size: 0;
}
.input-group .input-group-addon{
display: inline-block;
padding: 0 5px;
font-size: 14px;
line-height: 30px;
background: #ddd;
border: 1px solid #ddd;
border-bottom-left-radius: 3px;
border-top-left-radius: 3px;
}
.input-group .input-group-content{
line-height: 30px;
padding: 0 3px;
border: 1px solid #ddd;
border-bottom-right-radius: 3px;
border-top-right-radius: 3px;
vertical-align: top;
}
</style>
<div class="input-group">
<button class="input-group-addon">123</button>
<input type="text" class="input-group-content" placeholder="text">
</div>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script>
$("[data-snake='select']").on("change", function(e) {
console.log(e.target.value);
$("#select-value").html(e.target.value);
})
</script>
<script>
(function($) {
function Drop(ele, option) {
this.$ele = $(ele);
var options = $.extend({}, Drop.DEFAULTS, this.$ele.data(), typeof option == 'object' && option);
if (option.switchBefore) this.switchBefore = option.switchBefore;
if (option.switchAfter) this.switchAfter = option.switchAfter;
this.init();
}
Drop.DEFAULTS = {
switchBefore: null,
switchAfter: null
}
Drop.prototype.init = function() {
var self = this;
self.$ele.on("click.dropmenu", ".snake-drop-menu li", $.proxy(function(e) {
if (!self.switchBefore()) return;
self.$ele.find(".snake-drop-text").html($(e.target).html())
self.$ele.removeClass('snake-drop-hover');
self.switchAfter();
}, self));
self.$ele.hover(function(e) {
self.$ele.addClass('snake-drop-hover');
}, function(e) {
self.$ele.removeClass('snake-drop-hover');
})
}
Drop.prototype.showMenu = function() {
this.$ele.addClass('snake-drop-hover');
}
Drop.prototype.hideMenu = function() {
this.$ele.removeClass('snake-drop-hover');
}
Drop.prototype.switchBefore = function() {
console.log("before");
return true; //返回false 不会改变 返回真改变
}
Drop.prototype.switchAfter = function() {
console.log("after");
return true;
}
window.SnakeDrop = Drop;
})(jQuery);
</script>
<script>
var option = {
switchBefore: function() {
console.log($(this));
return true; //返回false 不会改变 返回真改变
}
}
var instance1 = new SnakeDrop($('#snake-dropdown-1'), option);
var instance2 = new SnakeDrop($('#snake-dropdown-2'), option);
$("#btn").on("click", function() {
instance1.showMenu();
})
</script>
</body>
</html>