jquery仿淘宝搜索下拉列表实现效果如下：
网上搜索教程：
<!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <title>jQuery UI Autocomplete - Default functionality</title> <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" /> <script src="http://code.jquery.com/jquery-1.9.1.js"></script> <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script> <script> $(function() { var availableTags = [ "ActionScript", "AppleScript", "Asp", "BASIC", "C", "C++", "Clojure", "COBOL高", "ColdFusion", "Erlang", "Fortran", "Groovy", "Haskell", "Java", "JavaScript", "Lisp", "Per高l", "PHP", "Python", "Ruby", "Scala", "Sche高" ]; $( "#tags1" ).autocomplete({ source: availableTags }); $("#tags2").autocomplete({ source: ["a", "b", "c"] }); //页面加载 $("#tags3").autocomplete({ source: DataSouce1() }); //数据库 $("#tags4").autocomplete({ source: function( request, response ) { var name=$.ui.autocomplete.escapeRegex( request.term ); response( $.grep( DataSouce2(name), function( item ){ return item; }) ); } }); //利用ajax页面加载就获取到数据源 function DataSouce1() { var mycars=new Array() for (var i = 0; i <100; i++) { mycars[i]="高"+i; }; return mycars; } //利用ajax根据输入的到数据库查找 相当于 function DataSouce2(name) { var mycars=new Array() for (var i = 0; i <100; i++) { mycars[i]=name+"_"+i; }; return mycars; } }); </script> </head> <body> <div class="ui-widget"> <label for="tags">Tags: </label> <input id="tags1" /> <input id="tags2" /> <input id="tags3" /> <input id="tags4" /> </div> </body> </html>
使用第四种方法（tags4）实现：
注意：
1.要开启ajax的同步（true异步，false同步），即：async:false,
2.声明和返回的集合要写在 $.ajax({})之外！
3.导包
<link rel="stylesheet"href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css"/>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<scriptsrc="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
代码如下：
<script type="text/javascript"> $("#querys").autocomplete({ source: function( request, response ) { var name=$.ui.autocomplete.escapeRegex( request.term ); response( $.grep( DataSouce(name), function( item ){ return item; }) ); } }); function DataSouce(name) { var querylist=new Array(); $.ajax({ type: "get", data:{q:name}, url:"query", dataType:'json', contentType: "application/json", async:false, success:function(data){ $(data.data.searchPOJOList).each(function(i){ querylist[i]=data.data.searchPOJOList[i].goodsName; }) } }) return querylist; } </script>
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