I have a one-page website with a section for a progress bar. I have a function for animation and all that, and I know how to start it when the page loads. But I don't know how to start it when I scroll to that section.
JS code :
window.onload = function() {
move();
};
var i = 0;
function move() {
if (i == 0) {
i = 1;
var elem = document.getElementById("myBar");
var width = 1;
var id = setInterval(frame, 10);
function frame() {
if (width >= 95) {
clearInterval(id);
i = 0;
} else {
width++;
elem.style.width = width + "%";
}
}
}
}
If you want to trigger on scroll, you could do that through jquery.
$(element).scroll(() ={
function ()
}
But if you want to animate on scroll, I'd advise you to use a library called Gsap. Look in the scrollTrogger document.
Simply use the scroll event on the whole document:
document.addEventListener('scroll', function(e) {
move();
});
var i = 0;
function move() {
if (i == 0) {
i = 1;
var elem = document.getElementById("myBar");
var width = 1;
var id = setInterval(frame, 10);
function frame() {
if (width >= 95) {
clearInterval(id);
i = 0;
} else {
width++;
elem.style.width = width + "%";
}
}
}
}<div style="height:1000px;width:100%;">
<div style="height:200px">padding</div>
<div id="myBar" style="background:green;">my bar</div>
</div>