limianwang/apply_call.md

## apply_call.md

      
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              apply_call.md
            
          
    While starting at my new job, I have heard constantly the question for the difference between Function.apply and Function.call.
Fundamentally, they are equal. Nothing is different in what happens to the function itself. The difference is, though, about how the function will be called.
Function.prototype.apply expects and array of arguments, while Function.prototype.call expects a list/component for the arguments.
function test(a, b, c) {
  console.log(this); // scope
  console.log(Array.prototype.slice.call(arguments));
}

test.call(null, 1, 2, 3);
test.apply(null, [1, 2, 3]);