Is there a difference between [removed] = stuff and [removed] = stuff()?

Question

I\'m most familiar with Python and somewhat with C, and when I see this syntax in JS it really confuses me

function begin () {
    console.log(\"done did it\");
         


        

Answer 1

The right way is :

window.onload = xxxx;

the xxx must be a function.

the first one:

var fn = function() {
    alert("abc");
}

window.onload = fn;

the other one:

var fn = function() {
    var abc = "abc";
    return function () {
        alert(abc);
    }
}
window.onload = fn();