119 lines
3.8 KiB
JavaScript
119 lines
3.8 KiB
JavaScript
~(function ($, window, document, undefined) {
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class Scroll {
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constructor(eles, opts) {
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this.$eles = eles;
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opts = opts || {};
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this.defaults = {
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mode: 'CSS',
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cssSpeed: 5,
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jsSpeed: 'normal',
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};
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this.options = $.extend(true, {}, this.defaults, opts);
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this.options.jsSpeed = this.handleJsSpeed(this.options.jsSpeed);
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this.init();
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}
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init() {
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this.handleEve();
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}
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handleJsSpeed(sp) {
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switch (sp) {
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case 'slow':
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return 50;
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case 'normal':
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return 30;
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case 'fast':
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return 15;
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}
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}
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handleEve() {
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const _this = this;
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this.$eles.each(function (i, domEle) {
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_this.cloneNode(domEle);
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_this.initValue(domEle);
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_this.wrapDiv(domEle);
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_this.createKeyframes();
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if (_this.options.mode === 'CSS') {
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_this.moveByCss(domEle);
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_this.handleHoverByCss(domEle);
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} else {
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_this.moveByJs(domEle);
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_this.handleHoverByJs(domEle);
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}
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});
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}
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cloneNode(ele) {
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$(ele).children().clone().appendTo($(ele));
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}
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initValue(ele) {
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$(ele).css({
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margin: 0,
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padding: 0
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});
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ele.num = 0;
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const o = $(ele).parents(":hidden").eq($(ele).parents(":hidden").length - 1);
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o.css({
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display: 'block'
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});
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// ele.h = parseInt($(ele).outerHeight(true) / 2);
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// To prevent the father setting display: flex; from affecting the height of the child element
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let sum = 0;
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$(ele).children().each(function (i, item) {
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sum += $(item).outerHeight(true);
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});
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ele.h = parseInt(sum / 2);
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o.css({
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display: 'none'
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});
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}
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wrapDiv(ele) {
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$(ele).wrap($(`<div style="height: ${ele.h}px; overflow: hidden; padding: 0">`));
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}
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createKeyframes() {
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const runkeyframes = `@keyframes IFER_MOVE {
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100%{
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transform: translateY(-50%);
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}
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}`;
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const style = document.createElement('style');
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style.type = 'text/css';
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style.innerHTML = runkeyframes;
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document.querySelector('head').appendChild(style);
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}
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moveByCss(ele) {
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$(ele).css({
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animation: `IFER_MOVE ${this.options.cssSpeed}s linear infinite`
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});
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}
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handleHoverByCss(ele) {
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$(ele).hover(function () {
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$(this).css('animation-play-state', 'paused');
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}, function () {
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$(this).css('animation-play-state', 'running');
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});
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}
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moveByJs(ele) {
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clearInterval(ele.timer);
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ele.timer = setInterval(() => {
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if (Math.abs(ele.num) === ele.h) {
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ele.num = 0;
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} else {
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$(ele).css('transform', 'translateY(' + ele.num + 'px)');
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}
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ele.num--;
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}, this.options.jsSpeed);
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}
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handleHoverByJs(ele) {
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const _this = this;
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$(ele).hover(function () {
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clearInterval(ele.timer);
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}, function () {
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_this.moveByJs(ele);
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});
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}
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}
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$.fn.i5Scroll = function (options) {
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return new Scroll(this, options);
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};
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})(jQuery, window, document); |