Is it possible to create animations (such as CSS property changes) in pure native JavaScript without relying on jQuery's animate method? I've experimented with jQuery's animation library, adjusting the framerate intervals to improve the smoothness of my animations. Any advice would be greatly appreciated!
Take a look at this illustration:
http://example.com/code-examples/1/
function moveElement(el, prop, start, end, duration) {
var fps = 0.06; // Set frame rate to 60 FPS
var curFrame = 0;
var deltaVal = (end - start) / duration / fps;
var intervalId = setInterval(function() {
curFrame++;
var val = start + deltaVal * curFrame;
el.style[prop] = val + "px";
if (val == end) {
clearInterval(intervalId);
}
}, 1 / fps);
}
moveElement(document.getElementById("b"), "left", 20, 200, 1500);
CSS3 has the ability to animate style changes automatically for various properties by utilizing the transition feature. This typically produces smoother animations compared to those created using JavaScript.
If you're interested in learning how to implement this, check out this helpful tutorial available here.
Check out this quick example:
function decreaseOpacity(element, start) {
if (element.style.opacity > 0){
console.log(element.style.opacity);
element.style.opacity -= 0.02;
setTimeout((function(e){return function(){decreaseOpacity(e);}})(element),10);
}
}
decreaseOpacity(document.getElementById("myimage"));
Take a look at the code in action on jsfiddle: http://jsfiddle.net/r3Tgp/2/
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