[英]Can I use .includes() to determines whether an array includes a certain element based on an array of strings instead of a single string?
现在,如果我使用这段代码,我会得到所有区域属性为“德玛西亚”的元素
let filtered = this.cards.filter((card) => {
return card.region.includes("Demacia");
})
现在我希望能够获取属性区域为“Noxus”或“Demacia”的所有元素,但是,这似乎不起作用,因为它返回一个空数组
let regions = ["Demacia", "Noxus"];
let filtered = this.cards.filter((card) => {
return card.region.includes(regions);
})
我什至可以这样做还是需要查看其他数组函数?
不要尝试将多个选项传递给includes
,而是查看regions
内部以查看它是否包含当前卡片的区域
let regions = ["Demacia", "Noxus"];
let filtered = this.cards.filter((card) => {
return regions.includes(card.region);
})
只是添加我的答案,因为Array.prototype.includes()
在 IE 中不受支持,所以如果你想支持旧浏览器,你可以这样做
let regions = ["Demacia", "Noxus"]; let filtered = this.cards.filter((card) => { return regions.indexOf(card.region) > -1; })
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