本文實例為大家分享了ajax實現無刷新省市縣三級聯動的具體代碼，供大家參考，具體內容如下
效果圖：
實現代碼：
1、html：
<html><head> <title></title> <style type="text/css"> select { width: 150px; } </style> <script src="js/Jquery1.7.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { $.ajax({ type: "post", contentType: "application/json", url: "WebService1.asmx/GetProvince", data: "{}", success: function (result) { var stroption = ''; for (var i = 0; i < result.d.length; i++) { stroption += '<option value=' + result.d[i].provinceID + '>'; stroption += result.d[i].provincename; stroption += '</option>'; } $('#seprovince').append(stroption); } }) $('#seprovince').change(function () { $('#secity option:gt(0)').remove(); $('#searea option:gt(0)').remove(); $.ajax({ type: "post", contentType: "application/json", url: "WebService1.asmx/GetCItyByPro", data: "{proid:'" + $(this).val() + "'}", success: function (result) { var strocity = ''; for (var i = 0; i < result.d.length; i++) { strocity += '<option value=' + result.d[i].cityID + '>'; strocity += result.d[i].cityname; strocity += '</option>'; } $('#secity').append(strocity); } }) }) $('#secity').change(function () { $('#searea option:gt(0)').remove(); $.ajax({ type: "post", contentType: "application/json", url: "WebService1.asmx/GetAreaByCity", data: "{cityid:'" + $(this).val() + "'}", success: function (result) { var stroarea = ''; for (var i = 0; i < result.d.length; i++) { stroarea += '<option value=' + result.d[i].areaID + '>'; stroarea += result.d[i].areaname; stroarea += '</option>'; } $('#searea').append(stroarea); } }) }) }) </script></head><body> <table> <tr> <td> 用戶名 </td> <td> <input id="Text1" type="text" /> </td> </tr> <tr> <td> 密碼 </td> <td> <input id="Text2" type="text" /> </td> </tr> <tr> <td> 確認密碼 </td> <td> <input id="Text3" type="text" /> </td> </tr> <tr> <td> 郵箱 </td> <td> <input id="Text4" type="text" /> </td> </tr> <tr> <td> 地址 </td> <td> <select id="seprovince"> <option>--請選擇--</option> </select> 省 <select id="secity"> <option>--請選擇--</option> </select>市 <select id="searea"> <option>--請選擇--</option> </select>縣 </td> </tr> </table></body></html>
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