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這篇文章主要為大家詳細介紹了jquery遍歷json對象集合、jQuery 遍歷JSON對象、jquery中遍歷讀取json串中的對象三種情況，感興趣的小伙伴們可以參考一下

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。