Animate div elements - jquery-animate

Question

How can I cause these div elements to stop and return to their starting position once they collide with one another? I tried adjusting adding to the pixels in the function, but that didn't work.
For example, I tried elem.style.right = pos + '100px'. When I tried this the div element ended up not moving at all.

Answer 1

You can try some form of collision detection. See the collisionDetection method below.
let leftIntervalId;
var leftElem = document.getElementById("myAnimation");
function myMove() {
var pos = 0;
leftIntervalId = setInterval(frame, 10);
function frame() {
if (pos == 350) {
clearInterval(leftIntervalId);
} else {
pos++;
leftElem.style.top = pos + 'px';
leftElem.style.left = pos + 'px';
}
}
}
const rightElem = document.getElementById("Animation");
function Move() {
var pos = 0;
var id = setInterval(frame, 10);
function frame() {
if (pos == 350) {
clearInterval(id);
} else {
pos++;
rightElem.style.top = pos + 'px';
rightElem.style.right = pos + 'px';
collisionDetection(parseInt(leftElem.style.left.replace(/px/, "")), pos,
leftIntervalId, id);
}
}
}
function collisionDetection(leftPos, rightPos, leftIntervalId, rightIntervalId) {
if (leftPos + 100 > 400 - rightPos) {
clearInterval(leftIntervalId);
clearInterval(rightIntervalId);
setTimeout(function() {
leftElem.style.top = '0px';
leftElem.style.left = '0px';
rightElem.style.top = '0px';
rightElem.style.right = '0px';
},
500);
}
}
#myContainer {
width: 400px;
height: 400px;
position: relative;
background: #eee;
}
#myAnimation {
width: 50px;
height: 50px;
position: absolute;
background-color: red;
}
#Animation {
width: 50px;
height: 50px;
position: absolute;
right: 0;
background-color: blue;
}
<p>
<button onclick="myMove(); Move()">Click Me</button>
</p>
<div id="myContainer">
<div id="myAnimation"></div>
<div id="Animation"></div>
</div>