本文实例为大家分享了JS代码实现页面切换效果的具体代码,供大家参考,具体内容如下
HTML+CSS部分
添加所有页面,和上一页、具体页、下一页的按钮,
设置div样式,默认第一页显示,其他页隐藏。
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<!DOCTYPE html>
< html >
< head >
< meta charset = "UTF-8" >
< title ></ title >
< style >
.item {
display: none;
width: 300px;
height: 400px;
overflow: hidden;
position: relative;
}
.item>img {
width: 100%;
height: auto;
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
}
.item.active {
display: block;
}
</ style >
</ head >
< body >
< div >
< button class = "prev" >上一页</ button >
< button class = "btn" >1</ button >
< button class = "btn" >2</ button >
< button class = "btn" >3</ button >
< button class = "btn" >4</ button >
< button class = "next" >下一页</ button >
</ div >
< div >
< div class = "item active" >< img src = "img/1.png" height = "1191" width = "820" /></ div >
< div class = "item" >< img src = "img/2.png" height = "1191" width = "820" /></ div >
< div class = "item" >< img src = "img/3.png" height = "1191" width = "820" /></ div >
< div class = "item" >< img src = "img/4.png" height = "1191" width = "820" /></ div >
</ div >
</ body >
</ html >
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js部分
通过按键来实现页面的功能
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<script type= "text/javascript" >
//封装函数、图片显示的部分、传入获取到的div,和被点击的序号
function toggle(eles, active) {
for ( var i = eles.length; i--;) {
eles[i].className = "item" ; //先让所有div隐藏
}
eles[active].className = "item active" ; //再让被点击的序号对应的div 显示
}
//获取按键和div
var aBtn = document.getElementsByClassName( "btn" );
var aIem = document.getElementsByClassName( "item" );
var prev = document.getElementsByClassName( "prev" );
var next = document.getElementsByClassName( "next" );
var nowPage = 0; //定义当前页,默认值为0;
for ( var i = aBtn.length; i--;) {
aBtn[i].tab = i;
aBtn[i].onclick= function (){
toggle(aIem, this .tab);
nowPage= this .tab; //被点击后,保存当前页的序号
}
}
//下一页
next[0].onclick = function () {
nowPage++;
nowPage %= aBtn.length;
toggle(aIem,nowPage);
}
//上一页
prev[0].onclick= function (){
nowPage--;
if (nowPage ==-1){
nowPage = aBtn.length-1;
}
toggle(aIem,nowPage);
}
</script>
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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/weixin_44189739/article/details/85342424