57 lines
2.0 KiB
JavaScript
57 lines
2.0 KiB
JavaScript
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// 无限循环左右滚动插件
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const vhInfiniteLoop = {
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init: function (dom, k = true, time = 1) {
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const _this = this;
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// 设置唯一标识符并初始化
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const numStr = `${dom.classList.value}-num`;
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const widthStr = `${dom.classList.value}-width`;
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const funStr = `${dom.classList.value}-fun`;
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_this[numStr] = 0;
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_this[funStr] = null;
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// Copy一遍子元素DOM并添加到父元素DOM尾部
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Array.from(dom.children)
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.map(i => i.cloneNode(true))
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.forEach(i => dom.appendChild(i));
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// 取宽度，设置初始位置，绑定事件
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// 每个子元素给悬浮事件
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Array.from(dom.children).forEach(i => {
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// 悬浮事件
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i.addEventListener("mouseenter", function () {
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_this[funStr] = function () {
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requestAnimationFrame(() => {
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_this[funStr](dom, numStr, widthStr, k);
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});
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};
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});
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// 取消悬浮事件
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i.addEventListener("mouseleave", function () {
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_this[funStr] = function (dom, numStr, widthStr, k) {
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_this[widthStr] = dom.offsetWidth;
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!k && (dom.style.transform = `translateX(-${_this[widthStr] / 2}px)`);
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_this[numStr] += time;
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dom.style.marginLeft = `${k ? "-" : ""}${_this[numStr]}px`;
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_this[numStr] >= _this[widthStr] / 2 && (_this[numStr] = 0);
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requestAnimationFrame(() => {
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_this[funStr](dom, numStr, widthStr, k);
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});
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};
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});
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});
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// 设置循环函数
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_this[funStr] = function (dom, numStr, widthStr, k) {
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_this[widthStr] = dom.offsetWidth;
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!k && (dom.style.transform = `translateX(-${_this[widthStr] / 2}px)`);
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_this[numStr] += time;
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dom.style.marginLeft = `${k ? "-" : ""}${_this[numStr]}px`;
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_this[numStr] >= _this[widthStr] / 2 && (_this[numStr] = 0);
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requestAnimationFrame(() => {
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_this[funStr](dom, numStr, widthStr, k);
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});
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};
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// 启动
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requestAnimationFrame(() => {
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_this[funStr](dom, numStr, widthStr, k);
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});
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}
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};
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