Stack Overflow Asked on November 10, 2021
I am trying to move an element in a page after the page loads. I’m trying to get the element to load, and then move after three seconds. Instead, the element just moves immediately on the page load. Here is my code so far:
<!DOCTYPE html>
<html>
<style>
#container {
width: 400px;
height: 400px;
position: relative;
}
#animate {
width: 50px;
height: 50px;
position: absolute;
background-color: red;
}
</style>
<body id="body">
<div id="container">
<div id="animate"></div>
</div>
<script>
var elem = document.getElementById("animate");
function myMove(element) {
var posx = 0;
var posy = 25;
var opacity = 0;
var id = setInterval(frame, 40);
function frame() {
if (posx == 10) {
clearInterval(id);
} else {
posx++;
opacity = opacity + .1
element.style.top = posy + "%";
element.style.left = posx + "%";
element.style.opacity = opacity;
}
}
}
document.getElementById("body").addEventListener("load", setTimeout(myMove(elem), 3000))
</script>
</body>
</html>Any help would be greatly appreciated.
Currently, the myMove methods execute immediately. To avoid this you can use arrow functions supported in ES6 or move myMove to a function
using arrow function (supported in ES6):
document.getElementById('body').addEventListener(
'load',
setTimeout(() => myMove(elem), 3000),
);
Convert to function
document.getElementById('body').addEventListener(
'load',
setTimeout(function () {
myMove(elem);
}, 3000),
);
Answered by Muhammad Saqlain on November 10, 2021
So basically you need this:
// Run at DOM loaded
document.addEventListener("DOMContentLoaded", function() {
console.log('DOM is loaded');
// Move
setTimeout(function(){ myMove(elem); }, 3000)
});
OR
// Run at full page load
window.addEventListener("load", function() {
console.log('Page is loaded');
// Move
setTimeout(function(){ myMove(elem); }, 3000)
});
Answered by tarkh on November 10, 2021
You need to do
setTimeout(() => myMove(elem), 3000)
otherwise it sets a timeout for whatever myMove(elem) returns, which means myMove(elem) runs immediately
Answered by dave on November 10, 2021
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