本文实例为大家分享了js实现鼠标切换图片的具体代码，供大家参考，具体内容如下
实现效果，可以利用鼠标移动在对应的小点点上，或者点击左右两侧的箭头切换图片，并在图片的上方显示出图片的页数，下方显示出对应图片的标题。
全部代码如下：
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charset = "UTF-8" >
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
< meta http-equiv = "X-UA-Compatible" content = "ie=edge" >
< title >图片切换</ title >
< style >
.picture {
position: relative;
width: 500px;
height: 333px;
margin: 0 auto;
border: 2px solid rgb(231, 127, 217);
overflow: hidden;
}
.radius {
width: 100%;
height: 10px;
position: absolute;
bottom: 30px;
text-align: center;
}
.pg { //图片上方页码
position: absolute;
margin: 0;
width: 100%;
height: 20px;
background-color: rgba(0, 0, 0, .4);
text-align: center;
font-size: 16px;
font-weight: 600;
color: #fff;
}
.title {
position: absolute;
width: 100%;
bottom: 0px;
text-align: center;
font-size: 16px;
font-weight: 600;
color: rgb(21, 223, 72);
}
span {
display: inline-block;
border: 10px solid #fdfdfd;
border-radius: 50%;
}
.active {
border: 10px solid #656466;
}
/* 左右箭头 */
.arrowhead-left,
.arrowhead-right {
position: absolute;
width: 41px;
height: 69px;
font-size: 30px;
line-height: 70px;
text-align: center;
color: #D6D8D4;
background-color: rgba(0,0,0,.3);
}
.arrowhead-left {
left: 0;
top: 40%;
}
.arrowhead-right {
right: 0;
top: 40%;
}
</ style >
</ head >
< body >
< div class = "picture" >
<!-- 图片页码 -->
< p class = "pg" >封面</ p >
< img src = "./image/d8.jpeg" alt = "" >
<!-- 小圆点点 -->
< p class = "radius" ></ p >
<!-- 图片的下面标题 -->
< p class = "title" >标题</ p >
<!-- 左右箭头 -->
< div class = "arrowhead-left" id = "al" > < </ div >
< div class = "arrowhead-right" id = "ar" > > </ div >
</ div >
< script >
var address = ["./image/d1.jpeg", "./image/d2.jpeg", "./image/d3.jpeg", "./image/d4.jpeg", "./image/d5.jpeg", "./image/d7.jpeg"];
// var imgs = document.getElementsByTagName("img");
var imgs = document.querySelector("img");
var len = address.length;
var str = "";
var pp = document.getElementsByTagName("p");//获取的是一个集合
// var pp = document.querySelector("p"); //获取的是一个元素
var al = document.getElementById("al");
var ar = document.getElementById("ar");
//添加span标签
for (i = 0; i < len ; i++) {
str += ' <span></ span >'
}
console.log(str);
console.log(pp);
pp[1].innerHTML = str;
var spans = pp[1].getElementsByTagName('span');
spans[0].className = 'active';
for (i = 0; i < len ; i++) {
spans[i] .index = i;
spans[i] .onmouseover = function () { //所有圆点的类为空
for ( i = 0 ; i < len; i++) {
spans[i] .className = "" ;
}
this.className = 'active' ; //给点击的span（圆点）添加类名
imgs.src = address [this.index];
pp[0].innerHTML = [this.index + 1] + "/6";
pp[2] .innerHTML = "风光" + [this.index + 1];
}
}
var n = 0 ;
ar.onclick = function () {
for ( i = 0 ; i < len; i++) {
spans[i] .className = "" ;
}
spans[n] .className = "active" ;
imgs.src = address [n];
pp[0].innerHTML = (n+1) + "/6";
pp[2] .innerHTML = "风光" +(n+1);
if (n<5) {
n++;
}
else {
n = 0 ;
}
}
al.onclick = function () {
for ( i = 0 ; i < len; i++) {
spans[i] .className = "" ;
}
spans[n] .className = "active" ;
imgs.src = address [n];
pp[0].innerHTML = (n+1) + "/6";
pp[2] .innerHTML = "风光" +(n+1);
if (n>0) {
n--;
}
else {}
n=(len-1);
}
}
</ script >
</ body >
</ html >
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服务器之家。
原文链接：https://blog.csdn.net/qq_38318589/article/details/99050117
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