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0095 call 和 apply 的区别是什么，哪个性能更好一些？ #95

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lotosv2010 opened this issue Oct 8, 2019 · 0 comments

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lotosv2010 commented Oct 8, 2019 •

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Function.prototype.apply和Function.prototype.call 的作用是一样的，区别在于传入参数的不同；
第一个参数都是，指定函数体内this的指向；
第二个参数开始不同，apply是传入带下标的集合，数组或者类数组，apply把它传给函数作为参数，call从第二个开始传入的参数是不固定的，都会传给函数作为参数。
call比apply的性能要好，平常可以多用call, call传入参数的格式正是内部所需要的格式.
参考call和apply的性能对比

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