js实现适合新闻类图片的轮播效果

2019-11-19 17:43:31

字体：大中小

来源：转载

供稿：网友

话不多说，请看代码：

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Picture carousel</title><style>*{ margin: 0; padding: 0;}.carousel-container{ overflow: hidden; width: 405px;/* 130*3+5*3 = 405 */ height: 150px; margin: 50px auto; background-color: #2c2c2c;}.carousel-area{ width: 1350px;/* 675*2 = 1350 */ height: 150px;}.carousel-ul{ float: left; overflow: hidden; width: 675px;/* 130*5+5*5 = 675 */ height: 150px;}.carousel-ul li{ float: left; overflow: hidden; width: 130px; height: 130px; margin: 10px 5px 10px 0; list-style-type: none;} </style></head><body> <div class="carousel-container"> <div class="carousel-area"> <ul class="carousel-ul" id="carousel-ul-1"> <li><img src="img/1.gif" alt=""></li> <li><img src="img/2.jpg" alt=""></li> <li><img src="img/3.jpg" alt=""></li> <li><img src="img/4.jpg" alt=""></li> <li><img src="img/5.gif" alt=""></li> </ul> </div> </div><script src="//cdn.bootcss.com/jquery/3.1.1/jquery.min.js"></script><script> $(document).ready(function() { var carousel_interval_id, //interval ID start_carousel_flag = false, //是否开始interval carousel_speed = 50, //滚动速度（px/s）,carousel_speed=1000/interval时间间隔。 start_interval = function() { //执行interval  start_carousel_flag = true;  carousel_interval_id = setInterval(function() {  var margin_left = $('.carousel-area').css('margin-left');  $('.carousel-area').css('margin-left', (parseInt(margin_left) - 1) + 'px'); //不断左移1px  if (parseInt($('.carousel-area').css('margin-left')) <= -($('.carousel-ul').width())) { //轮播部分超出容器后复位   $('.carousel-area').css('margin-left', 0);  }  }, 1000 / carousel_speed) }, end_interval = function() { //停止interval  start_carousel_flag = false;  carousel_interval_id = clearInterval(carousel_interval_id); } $('.carousel-area').append('<ul class="carousel-ul">' + $('.carousel-ul').html() + '</ul>'); //复制carousel-ul，填补左移后出现的无内容区域，以此完成循环 start_interval(); $('.carousel-area').hover( function() { //鼠标悬停事件  if (start_carousel_flag) { //已经开始interval  end_interval();  } }, function() { //鼠标离开事件  if (!start_carousel_flag) { //没有开始interval  start_interval();  } } )})</script></body></html>

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