JavaScript call apply模拟实现的相关内容

文章 2022-04-23 来自：开发者社区

JavaScript深入之call和apply的模拟实现

JavaScript深入系列第十篇，通过call和apply的模拟实现，带你揭开call和apply改变this的真相call一句话介绍 call：call() 方法在使用一个指定的 this 值和若干个指定的参数值的前提下调用某个函数或方法。举个例子：var foo = { value: 1 }; function bar...

文章 2017-12-14 来自：开发者社区

JavaScript深入之call和apply的模拟实现

call 一句话介绍 call： call() 方法在使用一个指定的 this 值和若干个指定的参数值的前提下调用某个函数或方法。举个例子： var foo = { value: 1 }; function bar() { console.log(this.value); } bar.call(foo); // 1 注意两点： call 改变了 this 的指向，指向...

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更新时间 2022-11-14 16:07:48

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