41.this 和 apply 的应用

var numbers = [5, 458, 120, -215];
var maxInNumbers = Math.max.apply(this, numbers); //第一个参数也可以填Math或null
console.log(maxInNumbers); // 458
var maxInNumbers = Math.max.call(this, 5, 458, 120, -215);
console.log(maxInNumbers); // 458