本文介绍了枚举TypeScript对象的属性的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
鉴于以下类,我如何枚举它的属性,即获得类似 [station1,station2,station3 ...]
的输出。我只能看到如何枚举属性的值,即 [null,null,null]
。
Given the following class, how can I enumerate it's properties, i.e. get an output like [station1, station2, station3 ...]
. I can only see how to enumerate the values of the properties, i.e. [null, null, null]
.
class stationGuide {
station1: any;
station2: any;
station3: any;
constructor(){
this.station1 = null;
this.station2 = null;
this.station3 = null;
}
}
推荐答案
你有两种选择,使用然后,或者使用:
You have two options, using the Object.keys() and then forEach, or use for/in:
class stationGuide {
station1: any;
station2: any;
station3: any;
constructor(){
this.station1 = null;
this.station2 = null;
this.station3 = null;
}
}
let a = new stationGuide();
Object.keys(a).forEach(key => console.log(key));
for (let key in a) {
console.log(key);
}
()
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