本文实例为大家分享了JavaScript实现轮播图特效的具体代码,供大家参考,具体内容如下
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | <!DOCTYPE html> < html > < head > < meta charset = "utf-8" > < title ></ title > < style type = "text/css" > .aaa { width: 600px; height: 350px; position: relative;/*相对定位*/ margin: 50px auto;/*离顶部50px,并且居中*/ } .picture img { position: absolute;/*绝对定位*/ } .dot { position: absolute; bottom: 5px; } .dot li { float: left; width: 16px; height: 16px; background-color: #e8e8e8; border-radius: 50%; list-style: none;/*清除列表样式*/ margin-right: 10px; cursor: pointer;/*光标呈现为指示链接的指针(一只手)*/ } .left { width: 30px; height: 30px; position: absolute; top: 169px; text-align: center; background-color: #000000; line-height: 30px; color: #FFFFFF; cursor: pointer;/*光标呈现为指示链接的指针(一只手)*/ } .right { width: 30px; height: 30px; position: absolute; top: 169px; right: 0; text-align: center; background-color: #000000; line-height: 30px; color: #FFFFFF; cursor: pointer;/*光标呈现为指示链接的指针(一只手)*/ } .aaa .spot { background-color: #FF0000; } </ style > </ head > < body > < div class = "aaa" > < div class = "picture" > < img src = "images/1.jpg" style = "width: 600px;height: 350px;" > < img src = "images/2.jpg" style = "width: 600px;height: 350px;" > < img src = "images/3.jpg" style = "width: 600px;height: 350px;" > < img src = "images/4.jpg" style = "width: 600px;height: 350px;" > < img src = "images/5.jpg" style = "width: 600px;height: 350px;" > </ div > < ul class = "dot" > < li class = "spot" ></ li > < li ></ li > < li ></ li > < li ></ li > < li ></ li > </ ul > < div class = "left" ><</ div > <!--< 转义字符 --> < div class = "right" >></ div > <!--> 转义字符 --> </ div > < script > var lis = document.querySelectorAll(".dot li") var picture = document.querySelectorAll(".picture img") var left = document.querySelector(".left") var right = document.querySelector(".right") var aaa = document.querySelector(".aaa") var index = 0 //设置索引号变量 picture[index].style.opacity = 1 //第一张图片显示出来 //右按钮换图 right.onclick = function() { fn("+") } //左按钮换图 left.onclick = function() { fn("-") } //定时器换图,每隔3000毫秒换图 var timer = setInterval(function() { fn("+") }, 3000) //鼠标进入暂停 aaa.onmouseover = function() { clearInterval(timer) } //鼠标离开继续 aaa.onmouseout = function() { timer = setInterval(function() { fn("+") }, 3000) } //鼠标触碰小点换图 for (var i = 0; i < lis.length ; i++) { lis[i] .in = i lis[i] .onmouseover = function () { fn(this.in) } } //函数 function fn(ope) { picture[index] .style.opacity = 0 //上一张图片隐藏 lis[index] .className = "" //清除小点样式 //判断ope if (typeof ope === 'number') { index = ope } else if (ope === '+') { //判断是否右按钮 if (index === 4) { index = 0 } else { index++ } } else { if (index === 0) { //判断是否左按钮 index = 4 } else { index-- } } picture[index] .style.opacity = 1 //当前图片显示 lis[index] .className = "spot" //给小点加上样式 } </script> </ body > </ html > |
效果如图所示:
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自学编程网。
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