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实现 apply/call/bind | HZFE - 剑指前端 Offer #65

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utterances-bot opened this issue Jan 19, 2022 · 1 comment

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utterances-bot commented Jan 19, 2022

实现 apply/call/bind | HZFE - 剑指前端 Offer

apply

https://febook.hzfe.org/awesome-interview/book4/coding-apply-call-bind

zitup commented Jan 19, 2022

apply 这一行实现，会使第二个参数传入 [] 或 {length: 0} 时报错

if (argsArray && typeof argsArray === "object" && argsArray.length) {

可以改成

if (argsArray && typeof argsArray === "object" && 'length' in argsArray) {

Akiq2016 assigned LLawlight

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