javascript - jQuery解析json并获取元素，得到未定义

Question

我有一个文本和一个按钮:

<div id="divtest"> <h1> Bla </h1> </div>
<button id="dugme1"> dugme </button>

当用户单击按钮时，将调用此脚本:

$("#dugme1").click(function(){

    $.get("http://mypath/PP/cfcs/remote.cfc", {
        method: 'listProjects',
        returnformat: 'json'
    },function(data){
        console.log(data);
        var t = JSON.parse(data);
        alert(t.PMNAME);
    })

    });

因此，当我单击按钮时，我会在控制台中得到以下响应:

[{"PNAME":"JumpingBunny","ANAME":"Nikola","PID":1,"PMNAME":"Marko"},{"PNAME":"WorkerLogger","ANAME":"Ivan","PID":2,"PMNAME":""},{"PNAME":"TimeStampter","ANAME":"Kevin","PID":3,"PMNAME":"Bart"},{"PNAME":"BugFixer2","ANAME":"Ivan","PID":4,"PMNAME":"Clark"},{"PNAME":"EditorS","ANAME":"Homer","PID":5,"PMNAME":"Bruce"}]

但是我希望警报向我展示 PNAME 的值(value)。但当我点击按钮时，我得到了未定义的信息。

我做错了什么？ 这是开发者控制台:

Answer 1

由于 t 是一个数组，因此您必须使用索引，例如:

t[0].PMNAME

要打印所有 PMNAME，您可以在数组上使用 forEach():

var t = [{"PNAME":"JumpingBunny","ANAME":"Nikola","PID":1,"PMNAME":"Marko"},{"PNAME":"WorkerLogger","ANAME":"Ivan","PID":2,"PMNAME":""},{"PNAME":"TimeStampter","ANAME":"Kevin","PID":3,"PMNAME":"Bart"},{"PNAME":"BugFixer2","ANAME":"Ivan","PID":4,"PMNAME":"Clark"},{"PNAME":"EditorS","ANAME":"Homer","PID":5,"PMNAME":"Bruce"}];

t.forEach(function(i){
  console.log(i.PNAME)
});