如何删除 TypeScript 中的数组项? [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，它有一个我用作键的属性.如果我有那把钥匙，我怎样才能从中删除一个项目?

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

与在 JavaScript 中的方式相同.

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.

最好使用 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);
}

这篇关于如何删除 TypeScript 中的数组项?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！