从 .json 文件（TypeScript）读取数据
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read data from .json file (TypeScript)
提问by Igor K.
I develop game using TypeScript. I have level.json file, which generated by level editor. How I can load this file in my game and read data from it?
我使用 TypeScript 开发游戏。我有 level.json 文件，它是由关卡编辑器生成的。我如何在我的游戏中加载这个文件并从中读取数据？
回答by Fenton
Simplistically speaking, you could load it with an AJAX call and parse the JSON:
简单地说，您可以使用 AJAX 调用加载它并解析 JSON：
function levelRequestListener () {
var levels = JSON.parse(this.responseText);
console.log(levels);
}
var request = new XMLHttpRequest();
request.onload = levelRequestListener;
request.open("get", "level.json", true);
request.send();
You could take this up a level by writing an interface to describe the levels structure so you could get type checking and auto-completion on the levelsvariable...
您可以通过编写一个接口来描述级别结构来将其提升一个级别，以便您可以对levels变量进行类型检查和自动完成......
interface Level {
id: number;
name: string;
}
function levelRequestListener () {
var levels: Level[] = JSON.parse(this.responseText);
console.log(levels[0].name);
}
