GSPreloader
How do I make an gspreloader?
A fun, pure JS preloader that is completely customizable. Only requires GSAP's TweenLite and CSSPlugin (or just TweenMax which has both). . What is a gspreloader? How do you make a gspreloader? This script and codes were developed by GreenSock on 21 August 2022, Sunday.
GSPreloader - Script Codes HTML Codes
<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>GSPreloader</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <p><strong>Click to open/close the preloader.</strong><br>Completely customizable (colors, radius, number of dots, size, etc.).<br>One JavaScript call opens or closes the preloader elegantly.</p> <script src='http://s3-us-west-2.amazonaws.com/s.cdpn.io/16327/TweenMax-latest-beta.js?v=999'></script> <script src="js/index.js"></script>
</body>
</html>
GSPreloader - Script Codes CSS Codes
/* none of this CSS is necessary for the preloader */
body { background-color: #ccc; font-family: sans-serif; font-size: 18px;
}
p { position: fixed; bottom: 0; text-align: center; width: 100%; padding: 0 10px 4px 10px;
}
GSPreloader - Script Codes JS Codes
//Pure JS, completely customizable preloader from GreenSock.
//Once you create an instance like var preloader = new GSPreloader(), call preloader.active(true) to open it, preloader.active(false) to close it, and preloader.active() to get the current status. Only requires TweenLite and CSSPlugin (http://www.greensock.com/gsap/)
var preloader = new GSPreloader({ radius:42, dotSize:15, dotCount:10, colors:["#61AC27","#555","purple","#FF6600"], //have as many or as few colors as you want. boxOpacity:0.2, boxBorder:"1px solid #AAA", animationOffset: 1.8, //jump 1.8 seconds into the animation for a more active part of the spinning initially (just looks a bit better in my opinion)
});
//open the preloader
preloader.active(true);
//for testing: click the window to toggle open/close the preloader
document.onclick = document.ontouchstart = function() { preloader.active( !preloader.active() );
};
//this is the whole preloader class/function
function GSPreloader(options) { options = options || {}; var parent = options.parent || document.body, element = this.element = document.createElement("div"), radius = options.radius || 42, dotSize = options.dotSize || 15, animationOffset = options.animationOffset || 1.8, //jumps to a more active part of the animation initially (just looks cooler especially when the preloader isn't displayed for very long) createDot = function(rotation) { var dot = document.createElement("div"); element.appendChild(dot); TweenLite.set(dot, {width:dotSize, height:dotSize, transformOrigin:(-radius + "px 0px"), x: radius, backgroundColor:colors[colors.length-1], borderRadius:"50%", force3D:true, position:"absolute", rotation:rotation}); dot.className = options.dotClass || "preloader-dot"; return dot; }, i = options.dotCount || 10, rotationIncrement = 360 / i, colors = options.colors || ["#61AC27","black"], animation = new TimelineLite({paused:true}), dots = [], isActive = false, box = document.createElement("div"), tl, dot, closingAnimation, j; colors.push(colors.shift()); //setup background box TweenLite.set(box, {width: radius * 2 + 70, height: radius * 2 + 70, borderRadius:"14px", backgroundColor:options.boxColor || "white", border: options.boxBorder || "1px solid #AAA", position:"absolute", xPercent:-50, yPercent:-50, opacity:((options.boxOpacity != null) ? options.boxOpacity : 0.3)}); box.className = options.boxClass || "preloader-box"; element.appendChild(box); parent.appendChild(element); TweenLite.set(element, {position:"fixed", top:"45%", left:"50%", perspective:600, overflow:"visible", zIndex:2000}); animation.from(box, 0.1, {opacity:0, scale:0.1, ease:Power1.easeOut}, animationOffset); while (--i > -1) { dot = createDot(i * rotationIncrement); dots.unshift(dot); animation.from(dot, 0.1, {scale:0.01, opacity:0, ease:Power1.easeOut}, animationOffset); //tuck the repeating parts of the animation into a nested TimelineMax (the intro shouldn't be repeated) tl = new TimelineMax({repeat:-1, repeatDelay:0.25}); for (j = 0; j < colors.length; j++) { tl.to(dot, 2.5, {rotation:"-=360", ease:Power2.easeInOut}, j * 2.9) .to(dot, 1.2, {skewX:"+=360", backgroundColor:colors[j], ease:Power2.easeInOut}, 1.6 + 2.9 * j); } //stagger its placement into the master timeline animation.add(tl, i * 0.07); } if (TweenLite.render) { TweenLite.render(); //trigger the from() tweens' lazy-rendering (otherwise it'd take one tick to render everything in the beginning state, thus things may flash on the screen for a moment initially). There are other ways around this, but TweenLite.render() is probably the simplest in this case. } //call preloader.active(true) to open the preloader, preloader.active(false) to close it, or preloader.active() to get the current state. this.active = function(show) { if (!arguments.length) { return isActive; } if (isActive != show) { isActive = show; if (closingAnimation) { closingAnimation.kill(); //in case the preloader is made active/inactive/active/inactive really fast and there's still a closing animation running, kill it. } if (isActive) { element.style.visibility = "visible"; TweenLite.set([element, box], {rotation:0}); animation.play(animationOffset); } else { closingAnimation = new TimelineLite(); if (animation.time() < animationOffset + 0.3) { animation.pause(); closingAnimation.to(element, 1, {rotation:-360, ease:Power1.easeInOut}).to(box, 1, {rotation:360, ease:Power1.easeInOut}, 0); } closingAnimation.staggerTo(dots, 0.3, {scale:0.01, opacity:0, ease:Power1.easeIn, overwrite:false}, 0.05, 0).to(box, 0.4, {opacity:0, scale:0.2, ease:Power2.easeIn, overwrite:false}, 0).call(function() { animation.pause(); closingAnimation = null; }).set(element, {visibility:"hidden"}); } } return this; };
}
Developer | GreenSock |
Username | GreenSock |
Uploaded | August 21, 2022 |
Rating | 4.5 |
Size | 3,864 Kb |
Views | 40,480 |
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