我的array.filter语法有什么问题? [英] What's wrong with my array.filter syntax?

问题描述

this.firmCategories = this.firmCategories.filter(x => {
  x.id !== firmCatId;
});

通过调试器，我可以看到firmCategories数组中有一个具有匹配ID的元素，但是执行此操作后，我会得到一个完全空的数组.

I can see that there is one element of the firmCategories array that has the matching ID by using my debugger, however, I am left with a completely empty array after this executes.

我希望除具有剩余匹配ID的元素外，其他所有元素.怎么了?

I would expect to have every element except for the one that has the matching ID leftover. What's up?

推荐答案

您缺少 return 语句.

this.firmCategories = this.firmCategories.filter(x => {
    return x.id !== firmCatId;
});

或者采用没有功能主体的箭头功能.

Or take an arrow function without a function body.

this.firmCategories = this.firmCategories.filter(x => x.id !== firmCatId);

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