BrianYang.us - When to use call and apply

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A very common interesting question for Javascript engineers. What is the difference between call and apply?

Call and Apply provide you a way to work with the arguments as array objects. Just remember that Apply accepts two arguments but Call can take an unlimited number.

function applyArray(){ return Array.prototype.pop.apply(arguments); }; applyArray('jump','run','hike'); // hike

Working in statements and expressions require us to use the this Javascript object. Using the call and apply functions allow us to route and reconfigure default javascript behaviors.