javascript csll() apply()

function fruits(){}

fruits.prototype = {
    color: "red",
    say: function(){
         console.log("My color is " + this.color);
    }
};
        
var another = {
   color: "yellow"
};
        
var apple = new fruits;
apple.say();                //My color is red
apple.say.call(another);    //My color is yellow
apple.say.apply(another);   //My color is yellow

区别：参数书写方式不同

call(thisObj, arg1, arg2, arg3, arg4);

apply(thisObj, [args]);

thisObj：call和apply第一个参数是一样的，该参数将替代Function类里面的this对象。
arg1,arg2....：是一个个的参数，
args：一个数组或类数组，是一个参数列表。

转自： https://www.jianshu.com/p/aa2eeecd8b4f