发布于 2017-02-06 01:04:35 | 153 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
1、利用图片width显示位置来播放图片，技术：.offsetWidth 、aBtn[i].index = i 、setInterval() 、oUl[0].style.left = 、onclick()
2、利用数组放入图片经行轮播，技术：setInterval()。没有onclick()
图片轮播12js.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>images slide</title>
<style type="text/css">
* {
margin: 0px;
padding: 0px;
}
li {
list-style: none;
}
img {
border: 0;
}
a {
text-decoration: none;
}
#slide {
width: 800px;
height: 400px;
box-shadow: 0px 0px 5px #c1c1c1;
margin: 20px auto;
position: relative;
overflow: hidden;
}
#slide ul {
position: absolute;
left: 0px;
top: 0px;
height: 400px;
width: 11930px;
}
#slide ul li {
width: 800px;
height: 400px;
overflow: hidden;
float: left;
}
#slide .ico {
width: 800px;
height: 20px;
overflow: hidden;
text-align: center;
position: absolute;
left: 0px;
bottom: 10px;
z-index: 1;
}
#slide .ico a {
display: inline-block;
width: 10px;
height:10px;
background: url(out.png) no-repeat 0px 0px;
margin: 0px 5px;
}
#slide .ico .active {
background: url(out1.png) no-repeat 0px 0px;
}
#btnLeft {
width: 60px;
height: 400px;
left: 0px;
top: 0px;
background: url() no-repeat 0px 0px;
position: absolute;
z-index: 2;
}
#btnLeft :hover {
background: url() no-repeat 0px 0px;
}
#btnRight {
width: 60px;
height: 400px;
right: 0px;
top: 0px;
background: url() no-repeat 0px 0px;
position: absolute;
z-index: 2;
}
#btnRight :hover {
background: url() no-repeat 0px 0px;
}
</style>
<script type="text/javascript">
window.onload = function() {
var oIco = document.getElementById("ico");
var aBtn = oIco.getElementsByTagName("a");
var oSlide = document.getElementById("slide");
var oUl = oSlide.getElementsByTagName("ul");
var aLi = oUl[0].getElementsByTagName("li");
var oBtnLeft = document.getElementById("btnLeft");
var oBtnRight = document.getElementById("btnRight");
var baseWidth = aLi[0].offsetWidth;
//alert(baseWidth);
oUl[0].style.width = baseWidth * aLi.length + "px";
var iNow = 0;
for(var i=0;i<aBtn.length;i++) {
aBtn[i].index = i;
aBtn[i].onclick = function() {
//alert(this.index);
//alert(oUl[0].style.left);
move(this.index);
//aIco[this.index].className = "active";
}
}
oBtnLeft.onclick = function() {
iNow ++;
//document.title = iNow;
move(iNow);
}
oBtnRight.onclick = function() {
iNow --;
document.title = iNow;
move(iNow);
}
var curIndex = 0;
var timeInterval = 1000;
setInterval(change,timeInterval);
function change() {
if(curIndex == aBtn.length) {
curIndex =0;
} else {
move(curIndex);
curIndex += 1;
}}
function move(index) {
//document.title = index;
if(index>aLi.length-1) {
index = 0;
iNow = index;
}
if(index<0) {
index = aLi.length - 1;
iNow = index;
}
for(var n=0;n<aBtn.length;n++) {
aBtn[n].className = "";
}
aBtn[index].className = "active";
oUl[0].style.left = -index * baseWidth + "px";
//buffer(oUl[0],{
// left: -index * baseWidth
// },8)
}
}
</script>
</head>
<body>
<div id="slide">
<a id="btnLeft" href="javascript:void(0);" ></a>
<a id="btnRight" href="javascript:void(0);" ></a>
<!--when change next image:style="left: -(n-1)*800px;"-->
<ul>
<li><img src="1.jpg" alt="" /></li>
<li><img src="2.jpg" alt="" /></li>
<li><img src="3.jpg" alt="" /></li>
<li><img src="4.jpg" alt="" /></li>
<li><img src="5.jpg" alt="" /></li>
<li><img src="6.jpg" alt="" /></li>
</ul>
<div id="ico" class="ico">
<a class="active" href="javascript:void(0);"></a>
<a href="javascript:void(0);"></a>
<a href="javascript:void(0);"></a>
<a href="javascript:void(0);"></a>
<a href="javascript:void(0);"></a>
<a href="javascript:void(0);"></a>
</div>
</div>
</body>
</html>
图片自动播放.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>images</title>
<script type="text/javascript">
var curIndex = 0;
var timeInterval = 1000;
var arr = new Array();
arr[0] = "1.jpg";
arr[1] = "2.jpg";
arr[2] = "3.jpg";
arr[3] = "4.jpg";
arr[4] = "5.jpg";
arr[5] = "6.jpg";
arr[6] = "7.jpg";
setInterval(changeImg,timeInterval);
function changeImg() {
var obj = document.getElementById("obj");
if (curIndex == arr.length-1) {
curIndex = 0;
} else {
curIndex += 1;
}
obj.src = arr[curIndex];
}
</script>
<!-- <script language="javascript">
setInterval(test,1000);
var array = new Array();
var index = 0;
var array = new Array("image/1.jpg","image/2.jpg","image/3.jpg","image/4.jpg","image/5.jpg","image/6.jpg","image/7.jpg","image/8.jpg","image/9.jpg","image/10.jpg");
function test() {
var myimg=document.getElementById("imgs");
if(index==array.length-1)
{ index=0; }else{ index++; }
myimg.src=array[index];
}
</script> -->
</head>
<body>
<img id = "obj" src = "1.jpg" border = 0 />
</body>
</html>