使用Javascript解析PHP中的JSON，并将值动态推送到数组中

我得到了一个数组：

var sampleitems =[];

我从返回值的url获取json数据

 WinJS.xhr({
        type: "GET",
        url: "http://some_webpage.php", 

    }).then(function (success) { 
// DYNAMICALLY PUSH CONTENTS TO ARRAY 'sampleitems'
    }, 
  function (error) {
      document.getElementById("check").innerText = "vada pochu";
  }

我需要阵列看起来像：

var sampleitems = [
{ key: "group1", title: "Group Title: 1", subtitle: "Group Subtitle: 1", backgroundImage: darkGray, description: groupDescription } ];

如何向示例项动态添加值，以及我的PHP页面应如何以何种格式返回JSON

您应该看看PHP的 功能。下面的代码应该输出您需要的JSON（我还没有检查它是否有效）

---

push（{key:“group1”，title:“grouptitle:1”，subtitle:“groupsubtitle:1”，backgroundImage:darkGray，description:groupDescription}）

将数组设置为执行json_编码，如：

$sampleitems = array(
        'key' => 'group1',
        'title' => 'Group Title: 1',
        'subtitle' => 'Group Subtitle: 1',
        'backgroundImage' => 'darkGray',
        'description' => 'groupDescription'
    );
    echo '['.json_encode($sampleitems).']';

结果:

[{"key":"group1","title":"Group Title: 1","subtitle":"Group Subtitle: 1","backgroundImage":"darkGray","description":"groupDescription"}]

---

我这样做了，但是如何从php发送json，如何通过JS执行推送操作？如何获取这是Javascript/推送项？var sampleitems=用JS编写

[{"key":"group1","title":"Group Title: 1","subtitle":"Group Subtitle: 1","backgroundImage":"darkGray","description":"groupDescription"}]