I've heard Javascript inserts “;” automatically and that may cause problems [duplicate]

Answer 1

One of the biggest things I've found is, let's say you have a function that returns coordinates (or any object really), similar to this.

function getCoordinates() {
    return
        {
            x: 10,
            y: 10
        };
}

You would expect to get back an object right? WRONG! You get back undefined. The interpreter converts the code into this

function getCoordinates() {
    return;
        {
            x: 10,
            y: 10
        };
}

Since return by itself is a valid statement. You need to be sure to write the return as follows

function getCoordinates() {
    return {
            x: 10,
            y: 10
        };
}