What happens when JavaScript variable name and function name is the same?

Question

I have the following code, where I declare a function and after it, a variable with the same name as the function:

function a(x) {
    return x * 2;
}

var a         


        

Answer 1

If you use a function name as variable name, its value is replaced by function body. So var a becomes your function a and thus your alert displays function a.

Edit But if you assign value to a like var a = "xya";. Then it function will be replaced by variable. As per Order of precedence

1. Variable assignment takes precedence over function declaration
2. Function declarations take precedence over variable declarations