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Simple sample code to simulate a select Drop-down box with jquery

Source: Internet
Author: User
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  This article is mainly to use the jquery simulation select dropdown box of simple sample code is introduced, need friends can come to the reference, I hope to help you.

Most of the time, the artist will feel that the default Select Drop-down box is hard to see (especially the Drop-down arrow button on the right), and they usually prefer to use a custom icon instead of this button. So you can only use JS + div to simulate, and a little bit, with jquery simulation, of course, online This article also a lot, just lazy to look for   code as follows: <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> <html xmlns=" http://www.w3.org/1999/xhtml "> <head>     <meta http-equiv=" Content-type " Content= "text/html; charset=gb2312 "/>     <title> self-implemented dropdown box </title>     <style type=" Text/css "media=" All ">         *{font-size:12px;line-height:18px;list-style:none;padding:0;margin:0; Text-decoration:none;color: #000 border:0}         page{text-align:center;margin:50px;}         input{border-bottom:solid 1px #ccc height:18px}               &NBS P       Expand{display:none;position:absolute;width:200px;height:100px;overflow-y:auto;border:solid 1px #ccc};   Expandli{margin:1px 0;background: #fff}        . Expand a{text-decoration:none;display:block;padding:0 5px;background: #efefef margin:1px 0}        . Expand A:hover{background: #ff9}     </ style>     <script type= "Text/javascript" src= "http://ajax.aspnetcdn.com/ajax/jQuery/" Jquery-1.6.min.js "></script>     <script type=" Text/javascript ">         & nbsp function Showexpand (Targetid, Expandid, Expand_class) {           //Turn off other pop-up layers   &NBSP ;         if (expand_class!= undefined) {                $ ("." + Expand_class). Hide ();                          //determining whether IE     &nbsp ;       var Isie = (! +[1,]);               var expand = $ ("#" + Expandid);            var target = $ ("#" + Targetid);               var dx = 0;             if (Isie) {                DX =-2; &nb Sp                       else {          & nbsp     DX = 0;                         expand.get (0) Style.left = target.ge T (0). Getboundingclientrect (). Left + dx + "px";             if (Isie) {                DX = &NB Sp                       else {          & nbsp     DX = 19;                         expand.get (0) Style.top = parseint (t Arget.get (0). Getboundingclientrect (). Top)+ dx + "px";             expand.show ();              //per Li Click Assignment             $ ("#" + Expandid). f IND ("Li"). each (function (i) {                $ (this). Show (). Click (function () {& nbsp                   Target.val ($ (this). Text (). Split (") [1]);                     expand.hide ();                 (           })     &NBS p;         }              function search (srcid, Expandid) {             var expand = $ ("#" + Expandid);             var src = $ ("#" + srcid);               var a = Expand.find ("a");         &nbsp   var v = src.val (). toUpperCase ();               A.each (function (i) {              &N Bsp if (v.length >= 2) {                    if ($ (this). Text (). Toupperca Se (). indexOf (v) = = 1) {                        $ (this). Paren T (). hide ();                                   & nbsp     Else {                        $ (this). Parent (). Show ();                                   & nbsp                 if (v.length <= 0) {          &NBSP ;         $ (this). Parent ()-Show ();   &nbsp             {           })         &NBSP ;   Src.val (v);        }       $ (). Ready (function () {   $ ("#txt_city"). KeyUp (function () {&N Bsp   Search (' txt_city ', ' city_select1 ');   &NBSP}). focus (function () {    Showexpand (' txt_city ', ' city_select1 ', ' expand ')    })      $ ("#txt_city2"). KeyUp (function () {    search (' Txt_city2 ', ' city_select2 ');    }). Focus (function () {    Showexpand (' Txt_city2 ', ' city_select2 ', ' expand ')    })  })     function Fntest () {   document.getelementbyid ("Txttarget"). Value = document.getElementById ("Txtsrc"). Value  }     </script> </head> <body>     <div class= "page" style= "Text-align:ce Nter ">         <input type=" text "value=" "id=" Txt_city "class=" inPut_expand " /><a             href=" # "onclick=" Showexpand (' txt_city ', ' city_ Select1 ', ' expand ') "> </a>         <div class=" expand "id=" City_select1 ">             <ul>                 <li><a href = "Javascript:void (0)" >sh Shanghai </a></li>                 <li>& Lt;a href= "javascript:void (0)" >BJ Beijing </a></li>                 < Li><a href= "javascript:void (0)" >hz Hangzhou </a></li>               & nbsp <li><a href= "javascript:void (0)" >wh Wuhan </a></li>                 <li><a href= "javascript:void (0)" >nj Nanjing </a></li>                 <li><a href= "JavaScript:void (0) ">wx Wuxi </a></li>             </ul>       & nbsp </div>           <input type= "text" value= "" id= "Txt_city2" class= "Input_expand"   /><a             href= "#" onclick= "Showexpand (' txt_city2 ', ' city_select2 ', ' expand ') "> </a>         <div class=" expand "id=" City_select2 ">         &NBS P   <ul>                 <li><a href= "javascript:void (0)" >CN Chinese </a></li>                 <li><a href= "javascript:void (0) ">en English </a></li>               <li><a href=" javascript: void (0) ">JP Japan </a></li>                 <li><a href=" Java Script:void (0) ">ra Russian</a></li>                 <li><a href= "javascript:void (0)" & GT;FA French </a></li>                 <li><a href= "Javascript:vo ID (0) ">00 other </a></li>             </ul>         ;/div>     <br/>   <br/>   <input type= "text" id= "txtsrc" onkeyup= "fntest ()"/> nbsp <br/>   <input type= "text" id= "Txttarget"/>     </div> </body> </html>

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