本文實例采用案例分析的方法介紹了jquery遍歷json對象的三種情況，供大家參考，具體內容如下
第一個案例：jquery 遍歷json對象集合 常用示例
jsp中
$.ajax({ url: "${applicationScope.rootpath}common/getContractPage.html?userConId=${userConId}", type: "post", dataType:"json", data: {}, success: function (jsonText) { if(jsonText){ var status = jsonText.status; var msg = jsonText.msg; if(status == '500'){ //有異常的信息時 alert(msg); }else{ $.each(jsonText,function(i,item){ var pngPath = item[0]; var pngName = item[1]; }); } } } });jsonText的格式：
{"status":"200","msg":[{"id":"1","name":"n1"},{"id":"2","name":"n2"}]}{"status":"500","msg":"異常信息"}java中：
List pngFileList = new ArrayList();//某對象集合if(null != pngFileList && pngFileList.size() > 0) {JSONArray pngFileArray =JSONArray.fromObject(pngFileList);}if(null != pngFileArray){this.setTextAjax(pngFileArray.toString());//異常的格式//this.setTextAjax("{/"status/":/"500/",/"msg/":/""+errormsg+"/"}");//沒有記錄/*** ajax返回html,包括json形式* * @param responseContent*/public void setTextAjax(String responseContent) {try {HttpServletResponse response = getHttpResponse();response.setContentType("text/html");response.setCharacterEncoding("UTF-8");response.setHeader("Pragma", "No-cache");response.setHeader("Content-Type", "text/html");response.setHeader("Cache-Control", "no-cache");response.setDateHeader("Expires", 0);PrintWriter out = response.getWriter();out.print(responseContent);out.flush();out.close();} catch (IOException e) {e.printStackTrace();}// ajaxResponse = new StringBufferInputStream(responseContent);}第二個案例：jQuery 遍歷JSON 對象
不說別的，直接貼代碼：
<script src="js/jquery-1.6.4.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function() { $("#Link").click(function() { var objson = "[{Title:'Sjr',Content:'Library',summary:'summary'},{Title:'Sjr',Content:'Library',summary:[{sum0:'sum0'},{sum0:'sum1'},{sum0:'sum2'}]},{Title:'Sjr',Content:'Library',summary:[{sum0:'sum0'},{sum0:'sum1'},{sum0:'sum2'}]}]"; var obj = eval(objson); $(obj).each(function(index) { var val = obj[index]; if (typeof (val.summary) == "object") { $(val.summary).each(function(ind) { alert(val.Title + " " + val.Content + " " + val.summary[ind].sum0); }); } else { alert(val.Title + " " + val.Content + " " + val.summary); } }); }); });</script>第三個案例：jquery中遍歷讀取json串中的對象
假設我們從服務器端獲取如下的json串，其中包括數組。我們該如何遍歷讀取呢？
復制代碼 代碼如下:{"result":null,"rows":[{"caishen":"東","fushen":"西北","huajiazi":"甲子","id":1,"nayin":"大海水","shengmen":"南","simen":"北","wugui":"西","xishen":"東南","yanggui":"西南","yingui":"東北"},{"caishen":"東北","fushen":"北","huajiazi":"乙丑","id":2,"nayin":"大林木","shengmen":"西北","simen":"西南","wugui":"東南","xishen":"東","yanggui":"西","yingui":"南"},{"caishen":"西","fushen":"東","huajiazi":"丙寅","id":3,"nayin":"石榴木","shengmen":"北","simen":"西北","wugui":"南","xishen":"東南","yanggui":"東北","yingui":"西南"}],"total":3}
使用.each難度太高，直接js讀取吧
//通過url獲取json對象 $.post("json/godjson!godlist", function (data){ //data.rows返回的是json字符串。需要轉換成json對象 var json = eval(data.rows) //json變量現在就是一個數組對象，直接讀取每個數組對象。結合屬性進行輸出 for(var i=0; i<json.length; i++){ alert(json[i].caishen+"--------- " + json[i].xishen); } //記得返回的數據類型一定要是json類型 }, "json"); 通過如上的方式就能獲取json串的json對象并進行輸出。
為大家分享這么多的案例，就是想幫助大家掌握jquery遍歷json對象集合的方法，真正理解，希望這篇文章可以幫助到大家。
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