How to use JSON in PPRO/Premiere.jsx? ReferenceError: JSON is undefined

[zhaosheng808]

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Topic

This is an issue regarding:

• [ ] The samples contained within this repo.
• [x] The documentation contained within this repo.

Versions

• [x] Supported CC app(s) and version(s): PPro 14.5.0x51

Description of the issue

PProPanel/jsx/PPRO/Premiere.jsx when I use JSON.parse() or JSON.stringify() in Premiere.jsx it throw error: ReferenceError: JSON is undefined;

try {
  var array = [1,2,3];
  var msg = JSON.parse(array)
  $._PPP_.updateEventPanel(msg);
} catch (err) {
  $._PPP_.updateEventPanel('error:' + err);
}

Proposed solution or attempted solutions that failed

[zhaosheng808]

JSX 并不预置 JSON对象，需要手动加载，你需要下载 json2.js并放在你的你的插件目录中，并用动态载入 JSX 文件的方法载入它。

JSX does not preset JSON objects. You need to manually download and load json2.js；

premiere.jsx

function getFontsJson(){
    var fontlist = new Object(); // 创建一个要传递的对象
    fontlist.length = app.fonts.length; 
    fontlist.list = [{}];
    for (var i=0; i < app.fonts.length; i++)
    {
        fontlist.list[fontlist.list.length]=
        {
            name:app.fonts[i].name,
            style:app.fonts[i].style,
            typename:fonts[i].typename,
            postScriptName:fonts[i].postScriptName,
            family:fonts[i].family
        }
    }
    return JSON.stringify(fontlist); // 把对象转化成 JSON 字符串并返回
}

test.js

var cs = new CSInterface();
function loadJSX(fileName){
      var extensionRoot = cs.getSystemPath(SystemPath.EXTENSION) + "/jsx/";
      cs.evalScript('$.evalFile("' + extensionRoot + fileName + '")');
 }

loadJSX("json2.js"); // 为 JAX 载入 JSON 库
cs.evalScript('getFontsJson()', function (result){
  var o = JSON.parse(result); //把 JSON 字符串转换为对象
  alert(o.list[0].name);  // 可以操作得到的对象了
})