如何在TypeScript中删除数组项? [英] How do I remove an array item in TypeScript?

问题描述

我有一个在TypeScript中创建的数组，它具有一个用作键的属性.如果我有该密钥，如何从中删除一个项目?

I have an array that I've created in TypeScript and it has a property that I use as a key. If I have that key, how can I remove an item from it?

推荐答案

与JavaScript中的方法相同.

Same way as you would in JavaScript.

delete myArray[key];

请注意，这会将元素设置为undefined.

Note that this sets the element to undefined.

更好地使用 Array.prototype.splice 函数:

Better to use the Array.prototype.splice function:

const index = myArray.indexOf(key, 0);
if (index > -1) {
   myArray.splice(index, 1);
}

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