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【Javascript】Array.indexOf 可以用于查找对象类型 #301

@smileyby

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@smileyby

indexOf 原理是采用 === 进行比较,来查找符合的元素
const fn1 = () => {console.log(1)};
const fn2 = () => {console.log(2)}
console.log([fn1, fn2].indexOf(fn1)) => 0

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