Javascript method difference between apply and call

Call and aplly are all part of a function.prototype approach, so each function instance has a

Same point:
The call () method and the Apply () method have the same effect:

改变原调用函数的内部this指向。
call()方法和apply()方法的第一个參数都是调用call/apply方法的函数内部this的指向。

different points:
When the function that calls the Call/apply method has a parameter, the Call/apply method also needs to be passed

call的2參、3參...n參分别表示原函数的1參、2參...n-1參apply的2參是一个数组，数组元素按顺序存储原方法的1參、2參...n參

Example:

function add(c, d){/*    这里的this表示add.call/apply的一參    假设直接调用add(c,d)，那么this指向window*/returnthisthisvar o = {a:1, b:357// 1 + 3 + 5 + 7 = 16 add.apply(o, [1020// 1 + 3 + 10 + 20 = 34 

Javascript method difference between apply and call