js实现简单的轮播图效果
(编辑:jimmy 日期: 2024/11/24 浏览:3 次 )
本文实例为大家分享了js实现简单的轮播图效果的具体代码,供大家参考,具体内容如下
代码:
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> <link rel="stylesheet" type="text/css" href="css/style.css" /> <style> * { margin: 0; padding: 0; } .box { width: 100%; height: 500px; border: 1px solid; } </style> <script src="/UploadFiles/2021-04-02/new_file.js">js:
window.onload = function() { //banner 自动播放 var oBanner = document.getElementById('banner'); var aLi = oBanner.getElementsByTagName('li'); var oJumpBtn = document.getElementById('jumpBtn'); var aBtn = oJumpBtn.getElementsByTagName('li'); var oPreImg = document.getElementById('preImg'); var oNexImg = document.getElementById('nexImg'); var iNow = 0; var timer = null; for (var i = 0; i < aBtn.length; i++) { aBtn[i].index = i; aBtn[i].onclick = function() { iNow = this.index; tab(); }; } function tab() { for (var i = 0; i < aBtn.length; i++) { aBtn[i].style.background = '#ccc'; aLi[i].style.opacity = 0; } aBtn[iNow].style.background = '#CF0F32'; aLi[iNow].style.opacity = 1; } function tick() { iNow++; if (iNow == aBtn.length) { iNow = 0; } tab(); } timer = setInterval(tick, 2000); oPreImg.onclick = function() { iNow--; if (iNow < 0) { iNow = aBtn.length - 1; } tab(); }; oNexImg.onclick = tick; oBanner.onmouseover = function() { clearInterval(timer); }; oBanner.onmouseout = function() { timer = setInterval(tick, 2000); }; }以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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