本文目录一览：
- 1、用javascript实现图片从下到上轮播
- 2、我想用JavaScript做一个图片轮播
- 3、如何用javascript实现轮播图
- 4、JS制作轮播图
- 5、javascript 图片切换轮播
- 6、求告知JS怎么做轮播图啊，我只做出了无缝动画
用javascript实现图片从下到上轮播
div
MARQUEE onmouseover=this.stop() onmouseout=this.start() scrollAmount=3 scrollDelay=50 direction=up height="99%" style="padding: 246px 0pt;"
ul
liimg src="imgs/goods/goods_1_20131012103829_2.jpg" width="150" height="50"//li
liimg src="imgs/goods/goods_1_20131012105644_2.jpg" width="150" height="50"//li
liimg src="imgs/goods/goods_1_20131012111143_2.jpg" width="150" height="50"//li
liimg src="imgs/goods/goods_1_20131012113433_2.jpg" width="150" height="50"//li
/ul
/MARQUEE
/div
我想用JavaScript做一个图片轮播
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
html
head
titleUntitled/title
styleimg{display:none;}
.btn{border:1px solid black;width:30px;height:30px;display:inline;margin-right:5px;}
/style
script
var index=1;//当前显示的图片索引(1-5)
var timer;
function switchImg(){
// 当前这一张隐藏
document.getElementById("img"+index).style.display="none";
// 如果当前显示的图片索引没有到最大值就继续增加
if(index5){index++;}
// 否则从第一个图片开始显示，索引从0开始
else{index=1;}
// 显示第index张
document.getElementById("img"+index).style.display="block";
// 下一秒,再执行本方法
timer = window.setTimeout("switchImg()",1000);
}
/script
/head
body onload="switchImg()"
!--放五张图,构造一个ImageList--
div style="border:1px solid black;width:300px;height:100px;"
img id="img1" src="back1.jpg"
img id="img2" src="back2.jpg"
img id="img3" src="logo.gif"
img id="img4" src="shop.gif"
img id="img5" src="shop2.gif"
/div
div id="btn1" onclick="manuImg()"/div
div id="btn2"/div
div id="btn3"/div
div id="btn4"/div
div id="btn5"/div
/body
/html
这样就可以图片轮换咯.
如何用javascript实现轮播图
function getStyle(obj,name){
2 if(obj.currentStyle){
3 return obj.currentStyle[name];
4 } else{
5 return getComputedStyle(obj,false)[name];
6 }
7 }
8
9 function startMove(obj, json, fnEnd) {
10 clearInterval(obj.timer);
11 obj.timer = setInterval(function() {
12 var bStop = true;
13 for (var attr in json) {
14 var cur = 0;
15 if (attr == "opacity") {
16 cur = Math.round(parseFloat(getStyle(obj, attr)) * 100);
17 } else {
18 cur = parseInt(getStyle(obj, attr))
19 }
20 var speed = (json[attr] - cur) / 10;
21 speed = speed 0 ? Math.ceil(speed) : Math.floor(speed);
22 if (cur !== json[attr]) {
23 bStop = false;
24 };
25 if (attr == "opacity") {
26 obj.style.opacity = (speed + cur) / 100;
27 obj.style.filter = 'alpha(opacity:' + (speed + cur) + ')';
28 } else {
29 obj.style[attr] = cur + speed + 'px';
30 }
31 }
32 if (bStop) {
33 clearInterval(obj.timer);
34 if (fnEnd) fnEnd();
35 }
36 }, 30)
37 }
然后写轮播小案例
1 !DOCTYPE html
2 html lang="en"
3
4 head
5 meta charset="UTF-8"
6 title淘宝轮播/title
7 style
8 ul,
9 li {
10 list-style: none;
11 margin: 0;
12 padding: 0;
13 }
14
15 #wrap {
16 width: 400px;
17 height: 225px;
18 margin: 0 auto;
19 position: relative;
20 overflow: hidden;
21 }
22
23 li {
24 float: left;
25 }
26
27 #tips li {
28 margin: 5px;
29 border: 1px solid #f60;
30 width: 20px;
31 height: 20px;
32 line-height: 20px;
33 text-align: center;
34 color: white;
35 cursor: pointer;
36 }
37
38 .active {
39 background: #f60;
40 }
41
42 img {
43 vertical-align: top;
44 width: 400px;
45 }
46
47 #content {
48 width: 2400px;
49 position: absolute;
50 left: -1200px;
51 }
52
53 #content li {
54 float: left;
55 }
56
57 #tips {
58 position: absolute;
59 right: 20px;
60 bottom: 5px;
61 }
62 /style
63 /head
64
65 body
66 div id="wrap"
67 ul id="content"
68 liimg src="img3/1.jpg" alt=""/li
69 liimg src="img3/2.jpg" alt=""/li
70 liimg src="img3/3.jpg" alt=""/li
71 liimg src="img3/4.jpg" alt=""/li
72 liimg src="img3/5.jpg" alt=""/li
73 liimg src="img3/6.jpg" alt=""/li
74 /ul
75 ul id="tips"
76 li1/li
77 li2/li
78 li3/li
79 li4/li
80 li5/li
81 /ul
82 /div
83 script src="move.js"/script
84 script
85 var wrap = document.getElementById('wrap');
86 var content = document.getElementById('content');
87 var tips = document.getElementById('tips');
88 var aLi = tips.getElementsByTagName('li');
89 var now = 0;
90 //var
91 for (var i = 0; i aLi.length; i++) {
92 aLi[0].className = 'active'; //把初始状态定义好
93 content.style.left = 0 +'px';
94 aLi[i].index = i; //自定义属性
95 aLi[i].onclick = function() {
96 now = this.index;
97 play();
98 }
99 }
100
101 function play() {
102 for (var j = 0; j aLi.length; j++) {
103 aLi[j].className = '';
104 }
105 aLi[now].className = 'active';
106
107 //this.index = now; //反过来写就不对了大兄弟
108 //content.style.left = -400 * this.index + 'px';
109 startMove(content, {
110 left: -400 * now, //你还真别说，json格式就是这么写的
111 });
112 }
113
114 function autoPlay() {
115 now++;
116 if (now == aLi.length) {
117 now = 0;
118 }
119 play();
120 }
121
122 var timer = setInterval(autoPlay, 2000);
123 wrap.onmouseover = function(){ //这里如果把事件绑定到ul上的话，那么鼠标移入，下面对饮的li会不起作用，
124 clearInterval(timer); //因为li的层级比较高，所以应该把事件绑定到大的div上
125 }
126 wrap.onmouseout = function(){
127 timer = setInterval(autoPlay,2000);
128 //setInterval(autoPlay,2000); 不能这么写，凡是开的定时器，必须得赋值，要不然总会多开一个定时器，导致速度加快
129 }
130 /script
131 /body
132
133 /html
JS制作轮播图
轮播图是每个网站中必不可少的元素，那么如何用JS制作轮播图呢？下面我就给大家分享一下。
工具/材料
Sublime Text
01
首先需要在Sublime中创建HTML文档，然后在文档的body区域中加入如下图所示的轮播图内容
02
然后我们需要在style标签中给所添加的轮播图内容声明样式，如下图所示
03
接下来我们就需要在script标签中实现轮播图的动画脚本内容了，如下图所示，注意script标签的type类型一定要是javascript
04
最后我们运行界面程序，你就会看到如下图所示的轮播图了，点击左右的箭头和中间的圆点都可以进行轮播图的切换
javascript 图片切换轮播
模仿爱奇艺首页图片轮播：
HTML代码：
!doctype html
html
head
meta charset='utf-8'/
title爱奇艺轮播图/title
link href="index.css" rel="stylesheet" type="text/css" /
script src="move.js" type="text/javascript"/script
script type="text/javascript"
window.onload = function (){
var arr=['第1张','第2张','第3张','第4张','第5张','第6张','第7张','第8张','第9张','第10张'];
var domWidth = document.documentElement.clientWidth;
var aScrollLi = $('scroll_ul').getElementsByTagName('li');
var aThumbLi = $('thumb_ul').getElementsByTagName('li');
var timer = null;
var iNow=0;
for(var m=0; maScrollLi.length; m++){
aScrollLi[m].style.backgroundPosition = -parseInt((1500-$('outline').offsetWidth)/2)+'px,0px';
}
window.onresize =function (){
for(var m=0; maScrollLi.length; m++){
aScrollLi[m].style.backgroundPosition = -parseInt((1500-$('outline').offsetWidth)/2)+'px,0px';
}
}
for(var i=0; iaThumbLi.length; i++){
aThumbLi[i].index = i;
aThumbLi[i].onclick=function (){
iNow = this.index;
scroll(this);
};
}
timer = setInterval(function(){
if(iNow == aScrollLi.length-1){
iNow=0;
}else{
iNow++;
}
scroll(aThumbLi[iNow]);
},1000);
$('outline').onmouseover = function(){
clearInterval(timer);
}
$('outline').onmouseout = function(){
timer = setInterval(function(){
if(iNow == aScrollLi.length-1){
iNow=0;
}else{
iNow++;
}
scroll(aThumbLi[iNow]);
},1000);
}
function scroll(obj){
for(var j=0; jaThumbLi.length; j++){
aThumbLi[j].className = '';
aScrollLi[j].style.display = 'none';
}
obj.className = 'active';
aScrollLi[iNow].style.display = 'block';
aScrollLi[iNow].style.opacity = 0;
aScrollLi[iNow].style.filter = "alpha(opacity:0)";
move(aScrollLi[iNow],{opacity:100},8);
$('info').innerHTML = arr[iNow];
$('info').style.bottom = '-20px';
move($('info'),{bottom:20},8);
}
}
/script
/head
body
div id="outline"
div id="scroll"
ul id="scroll_ul"
li style="background-image:url(img/1.jpg);"a href="#"/a/li
li style="background-image:url(img/2.jpg);"a href="#"/a/li
li style="background-image:url(img/3.jpg);"a href="#"/a/li
li style="background-image:url(img/4.jpg);"a href="#"/a/li
li style="background-image:url(img/5.jpg);"a href="#"/a/li
li style="background-image:url(img/6.jpg);"a href="#"/a/li
li style="background-image:url(img/7.jpg);"a href="#"/a/li
li style="background-image:url(img/8.jpg);"a href="#"/a/li
li style="background-image:url(img/9.jpg);"a href="#"/a/li
li style="background-image:url(img/10.jpg);"a href="#"/a/li
/ul
/div
div id="thumb"
ul id="thumb_ul"
li class='active'img src='img/1_1.jpg' //li
liimg src='img/2_2.jpg' //li
liimg src='img/3_3.jpg' //li
liimg src='img/4_4.jpg' //li
liimg src='img/5_5.jpg' //li
liimg src='img/6_6.jpg' //li
liimg src='img/7_7.jpg' //li
liimg src='img/8_8.jpg' //li
liimg src='img/9_9.jpg' //li
liimg src='img/10_10.jpg' //li
/ul
/div
div id="info"第1张/div
/div
/body
/html
CSS代码：
*{padding:0px; margin:0px;}
html{background:#fff;color:#000;}
ul{list-style:none;}
#outline{width:auto; min-width:1000px; height:410px; background:#000; margin-top:20px; overflow:hidden; position:relative;}
#outline #scroll ul {height:410px;}
#outline #scroll ul li{height:410px;}
#outline #thumb{width:150px; background:url(img/bgphone.png) no-repeat left top; padding:13px; position:absolute; top:10px; right:10px;}
#outline #thumb ul{height:auto; overflow:hidden; background:#000; border-radius:5px;}
#outline #thumb li{float:left; margin-bottom:1px; filter:alpha(opacity:60); opacity:0.6; cursor:pointer;}
#outline #thumb li.active{filter:alpha(opacity:100); opacity:1;}
#outline #thumb li img{display:block;}
#outline #info{position:absolute; left:20px; bottom:20px; color:#fff; font-size:16px; width:100px; height:20px; line-height:20px;}
JS代码：
function move(obj,json,iSpeed,fn){
clearInterval(obj.timer);
obj.timer = setInterval(function(){
var oBtn=true;
for(var attr in json){
if(attr == 'opacity'){
iCur = parseInt(parseFloat(getStyle(obj,attr))*100);
}else{
iCur = parseInt(getStyle(obj,attr));
}
speed = (json[attr]-iCur)/iSpeed;
speed = speed0?Math.ceil(speed):Math.floor(speed);
if(iCur != json[attr]){
oBtn = false;
}
if(attr == 'opacity'){
obj.style.filter = "alpha(opacity:"+(iCur+speed)+")";
obj.style.opacity = (iCur+speed)/100;
}else{
obj.style[attr] = (iCur+speed)+'px';
}
}
if(oBtn){
clearInterval(obj.timer);
obj.timer=null;
if(fn){
fn();
}
}
},30);
}
function getStyle(obj,attr){
if(obj.currentStyle){
return obj.currentStyle[attr];
}else{
return getComputedStyle(obj,null)[attr];
}
}
function $(obj){
return document.getElementById(obj);
}
如果有什么不懂，可以咨询：QQ1003837059.请注明来自百度知道
求告知JS怎么做轮播图啊，我只做出了无缝动画
!DOCTYPE html
html lang="en"
head
meta charset="utf-8"
style type="text/css"
*{
padding:0;margin:0;
}
div{
width: 1172px;
height: 447px;
border: 1px solid black;
position: relative;
top:20px;
left: 96px;
overflow: hidden;
}
.ul1{
position: absolute;
width: 1172px;
height: 447px;
}
.ul2{
position: relative;
left: 500px;
top: 410px;
}
.ul2 li{
list-style: none;
height: 20px;
width: 20px;
border-radius: 50%;
background: white;
float: left;
margin-left: 5px;
cursor: pointer;
}
#active{
background: #f0f;
}
.ul1 li{
list-style: none;
float: left;
width: 500px;
height: 450px;
}
.li1{
background: url(img/1.jpg);
}
.li2{
background: url(img/2.jpg);
}
.li3{
background: url(img/3.jpg);
}
.li4{
background: url(img/4.jpg);
}
/style
script type="text/javascript"
window.onload=function(){
var oDiv=document.getElementsByTagName('div')[0];
var oUl1=oDiv.getElementsByClassName('ul1')[0];
var aLi1=oUl1.getElementsByTagName('li');
var oUl2=oDiv.getElementsByClassName('ul2')[0];
var aLi2=oUl2.getElementsByTagName('li');
var timer=null;
var run=-aLi1[0].offsetWidth;
var iNow=-1;
//增加ul宽度
oUl1.style.width=aLi1[0].offsetWidth*aLi1.length+'px';
//双层for循环选项卡
for (var a = 0; a aLi1.length; a++) {
aLi2[a].index=a;
aLi2[a].onmouseover=function(){
for (var j = 0; jaLi2.length; j++) {
aLi2[j].index=j;
aLi2[j].id='';
iNow=this.index;
};
this.id='active';
clearInterval(timer);
oUl1.style.left=this.index*run+'px';
}
aLi2[a].onmouseout=function(){
timer=setInterval(fun,1000);
}
};
//开启计时器 启动让图片跟下边的li轮播
timer=setInterval(fun,1000);
fun();
function fun(){
if(iNow==aLi1.length-1){
iNow=0;
}else{
iNow++;
}
oUl1.style.left=iNow*run+'px';
for (var i = 0; i aLi2.length; i++) {
aLi2[i].index=i;
aLi2[i].id='';
};
aLi2[iNow].id='active';
}
}
/script
/head
body
div
ul class="ul1"
li class="li1"/li
li class="li2"/li
li class="li3"/li
li class="li4"/li
/ul
ul class="ul2"
li/li
li/li
li/li
li/li
/ul
/div
/body
/html
样式根据自己的需要调一下，你需增加焦点绑定和清除定时器，你自学？
