JavaScript. Why doesn't the object collision code work?

Question

JavaScript

self.collision = function () {
        if(collisions(this.x, this..y, this.width, this..height)) {
            console.log("detected");
        }
    }
function collisions (rect1, rect2) {
    var rect1 = tank;
    var rect2 = enemyTank;
    return (rect1.x < rect2.x + rect2.width &&
        rect1.x + rect1.width > rect2.x &&
        rect1.y < rect2.y + rect2.height &&
        rect1.height + rect1.y > rect2.y) 
}

Answer 1

Zashib you posted a footcloth code ... the whole game or something? And we should look in it where it does not work?
I can send you the code where object collision works:
https://jsfiddle.net/bt0qgv9z/1/