jQuery解析json

①

JSON數據如下，是一個嵌套JSON：

{"comments":[{"content":"很不錯嘛","id":1,"nickname":"納尼"},{"content":"喲西喲西","id":2,"nickname":"小強"}]}

function loadInfo() {
    $.getJSON("loadInfo", function(data) {
        $("#info").html("");//清空info內容
        $.each(data.comments, function(i, item) {
            $("#info").append(
                    "<div>" + item.id + "</div>" + 
                    "<div>" + item.nickname    + "</div>" +
                    "<div>" + item.content + "</div><hr/>");
        });
        });
}

loadinfo是請求的地址，function(data){...}就是在請求成功后的回調函數，data封裝了返回的JSON對象，在下面的$.each(data.comments,function(i,item){...})方法中data.comments直接到達JSON數據內包含的JSON數組：

[{"content":"很不錯嘛","id":1,"nickname":"納尼"},{"content":"喲西喲西","id":2,"nickname":"小強"}]

②

如果返回的JSON數據比較復雜，則只需多些$.each()進行遍歷即可，嘿嘿。例如如下JSON數據：

{"comments":[{"content":"很不錯嘛","id":1,"nickname":"納尼"},{"content":"喲西喲西","id":2,"nickname":"小強"}],"content":"你是木頭人，哈哈。","infomap":{"性別":"男","職業":"程序員","博客":"http:\/\/www.cnblogs.com\/codeplus\/"},"title":"123木頭人"}

functionloadInfo() {
    $.getJSON("loadInfo", function(data) {
        $("#title").append(data.title+"<hr/>");
        $("#content").append(data.content+"<hr/>");
//jquery解析map數據
       $.each(data.infomap,function(key,value){
            $("#mapinfo").append(key+"----"+value+"<br/><hr/>");
        });
//解析數組
       $.each(data.comments, function(i, item) {
            $("#info").append(
                    "<div>"+item.id +"</div>"+
                    "<div>"+item.nickname    +"</div>"+
                    "<div>"+item.content +"</div><hr/>");
        });
        });
}

③直接解析一個json字符串

var result={"getMeters":[{"Mid":"34","Mname":"","Tid":"5416685","Tname":"5號樓","Tcldid":"11","Unicode":"152"},{"Mid":"35","Mname":"","Tid":"5416685","Tname":"5號樓","Tcldid":"12","Unicode":"152"}]}

    var getCode=new Array();

       var dataobj = eval("(" + result.value + ")"); //轉換為json對象 
    $.each(dataobj.getMeters, function (i, item) {
         getCode.push(item.Unicode);
    });