1 <!DOCTYPE html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>jq--实现自定义下拉框</title>
6 </head>
7 <style>
8 * {
9 margin: 0;
10 padding: 0
11 }
12
13 ul,
14 ol {
15 list-style: none
16 }
17
18 .select_box {
19 position: relative;
20 margin: 100px auto;
21 width: 300px;
22 }
23
24 .select {
25 padding: 0 10px;
26 line-height: 30px;
27 /* background:url("../img/icon.jpg") no-repeat right; */
28 border: 1px solid #dedede;
29 }
30
31 .select:hover {
32 cursor: pointer;
33 }
34
35 .select span {
36 display: block;
37 }
38
39 .list {
40 display: none;
41 position: absolute;
42 top: 32px;
43 width: 298px;
44 max-height: 160px;
45 border: 1px solid #dedede;
46 border-top: none;
47 overflow-y: auto;
48 overflow-x: hidden;
49 text-overflow: ellipsis;
50 white-space: nowrap;
51 }
52
53 .list li {
54 padding: 0 10px;
55 line-height: 30px;
56 }
57
58 .list li:hover {
59 background: #F2F5F9;
60 color: #666666;
61 }
62
63 /* 滑条样式 */
64 .list::-webkit-scrollbar {
65 width: 6px;
66 height: 6px;
67 background: transparent;
68 }
69
70 .list::-webkit-scrollbar-thumb {
71 background: transparent;
72 border-radius: 4px;
73 }
74
75 .list:hover::-webkit-scrollbar-thumb {
76 background: hsla(0, 0%, 53%, 0.4);
77 }
78
79 .list:hover::-webkit-scrollbar-track {
80 background: hsla(0, 0%, 53%, 0.1);
81 }
82 </style>
83 <body>
84 <div class="select_box">
85 <div class="select ">
86 <span>请选择</span>
87 </div>
88 <ul class="list ">
89 <li>01</li>
90 <li>02</li>
91 <li>03</li>
92 </ul>
93 </div>
94 <div class="select_box">
95 <div class="select ">
96 <span>请选择</span>
97 </div>
98 <ul class="list ">
99 <li>01</li>
100 <li>02</li>
101 <li>03</li>
102 <li>04</li>
103 <li>05</li>
104 <li>06060606060606060606060606060606060606060606</li>
105 </ul>
106 </div>
107 <script src="../js/jquery-1.7.2.js"></script>
108 <script>
109 $(function() {
110 $(".select").click(function() {
111 $(".list").not(this).slideUp();
112 $(this).next(".list").slideToggle();
113 })
114 $(".list li").click(function() {
115 $(this).parent().prev(".select").children("span").html($(this).html());
116 $(".list").slideUp();
117 })
118 $(document).bind("click", function(e) {
119 var e = e || window.event; //事件对象，兼容IE
120 var target = e.target || e.srcElement; //源对象，兼容火狐和IE
121 while (target) {
122 if (target.className && target.className == "select_box") { //循环判断至根节点，防止点击的是#selected和它的子元素
123 return;
124 }
125 target = target.parentNode;
126 }
127 $(".list").slideUp(); //点击的不是#selected和它的子元素，隐藏下拉菜单
128 })
129 })
130 </script>
131 </body>
132 </html>
JQ换成自己的:<script src="../js/jquery-1.7.2.js"></script>