js移动图片_js中如何拖动DIV中的图片

1. 原生js，实现图片可拖拽，并且移动四个角和四条变能够自由变换图片大小

见证奇迹的时刻到了：

<!DOCTYPEhtml>
<html>
<head>
<metacharset="UTF-8">
<style>
*{
margin:0;
padding:0
}

.box{
position:absolute;
top:100px;
left:100px;
}

/*四边*/
.box.t,
.box.b,
.box.l,
.box.r{
position:absolute;
z-index:1;
background:#666;
}

.box.l,
.box.r{
width:10px;
height:100%;
cursor:col-resize;
}

.box.t,
.box.b{
width:100%;
height:10px;
cursor:row-resize;
}

.box.t{
top:0;
}

.box.b{
bottom:0;
}

.box.l{
left:0;
}

.box.r{
right:0;
}

/*四角*/
.box.tl,
.box.bl,
.box.br,
.box.tr{
width:20px;
height:20px;
position:absolute;
background:#CCC;
z-index:2;
cursor:nwse-resize
}

.box.tl,
.box.bl{
left:-5px;
}

.box.tr,
.box.br{
right:-5px;
}

.box.br,
.box.bl{
bottom:-5px;
}

.box.tl,
.box.tr{
top:-5px;
}

.box.tr,
.box.bl{
cursor:nesw-resize;
}

/*图片*/
img{
width:100%;
height:100%;
}
</style>
<script>

window.onload=function(){
varoDiv=document.getElementsByTagName('div')[0];
oDiv.style.width='500px';
varaSpan=oDiv.getElementsByTagName('span');
for(vari=0;i<aSpan.length;i++){
dragFn(aSpan[i]);
}

functiondragFn(obj){
obj.onmousedown=function(ev){
varoEv=ev||event;

varoldWidth=oDiv.offsetWidth;
varoldHeight=oDiv.offsetHeight;
varoldX=oEv.clientX;
varoldY=oEv.clientY;
varoldLeft=oDiv.offsetLeft;
varoldTop=oDiv.offsetTop;

document.onmousemove=function(ev){
varoEv=ev||event;

if(obj.className=='tl'){
oDiv.style.width=oldWidth-(oEv.clientX-oldX)+'px';
oDiv.style.height=oldHeight-(oEv.clientY-oldY)+'px';
oDiv.style.left=oldLeft+(oEv.clientX-oldX)+'px';
oDiv.style.top=oldTop+(oEv.clientY-oldY)+'px';
}
elseif(obj.className=='bl'){
oDiv.style.width=oldWidth-(oEv.clientX-oldX)+'px';
oDiv.style.height=oldHeight+(oEv.clientY-oldY)+'px';
oDiv.style.left=oldLeft+(oEv.clientX-oldX)+'px';
oDiv.style.bottom=oldTop+(oEv.clientY+oldY)+'px';
}
elseif(obj.className=='tr'){
oDiv.style.width=oldWidth+(oEv.clientX-oldX)+'px';
oDiv.style.height=oldHeight-(oEv.clientY-oldY)+'px';
oDiv.style.right=oldLeft-(oEv.clientX-oldX)+'px';
oDiv.style.top=oldTop+(oEv.clientY-oldY)+'px';
}
elseif(obj.className=='br'){
oDiv.style.width=oldWidth+(oEv.clientX-oldX)+'px';
oDiv.style.height=oldHeight+(oEv.clientY-oldY)+'px';
oDiv.style.right=oldLeft-(oEv.clientX-oldX)+'px';
oDiv.style.bottom=oldTop+(oEv.clientY+oldY)+'px';
}
elseif(obj.className=='t'){
oDiv.style.height=oldHeight-(oEv.clientY-oldY)+'px';
oDiv.style.top=oldTop+(oEv.clientY-oldY)+'px';
}
elseif(obj.className=='b'){
oDiv.style.height=oldHeight+(oEv.clientY-oldY)+'px';
oDiv.style.bottom=oldTop-(oEv.clientY+oldY)+'px';
}
elseif(obj.className=='l'){
oDiv.style.height=oldHeight+'px';
oDiv.style.width=oldWidth-(oEv.clientX-oldX)+'px';
oDiv.style.left=oldLeft+(oEv.clientX-oldX)+'px';
}
elseif(obj.className=='r'){
oDiv.style.height=oldHeight+'px';
oDiv.style.width=oldWidth+(oEv.clientX-oldX)+'px';
oDiv.style.right=oldLeft-(oEv.clientX-oldX)+'px';
}
};

document.onmouseup=function(){
document.onmousemove=null;
};
returnfalse;
};
}

};
</script>
</head>

<body>
<divclass="box">
<spanclass="r"></span>
<spanclass="l"></span>
<spanclass="t"></span>
<spanclass="b"></span>
<spanclass="br"></span>
<spanclass="bl"></span>
<spanclass="tr"></span>
<spanclass="tl"></span>
<imgsrc="https://gss0.bdstatic.com/70cFsjip0QIZ8tyhnq/img/iknow/730-350-0.jpg">
</div>
</body>
</html>

2. js中如何拖动DIV中的图片

代码放出来看抄看

是不是冒袭泡和捕获的问题
试试简单的，看看点击图片时 div上的onclick事件有没有被触发

// 看起来是使用 jquery ,代码贴完整些吧，
this.mousedown(function(){
中this是指向什么对象都没看出来

//加一个 return false
//另外 event.offsetX 并不兼容 firefox

$(document).mousemove(function(){
if(movestart){
$("#id1").css("left",event.clientX-x1+"px");
$("#id1").css("top",event.clientY-y1+"px");
return false;
}

})

3. js如何点击左右按钮切换图片

这样：

<!DOCTYPE html>

<html>

<head>

<title>动态切换图片</title>

</head>

<style>

ul{

padding:0;margin:0;

}

li{

list-style: none;

}

#pic{

position: relative;

width: 400px;

height: 400px;

background-color:red;

margin:100px auto;

background:url('image/1.jpg') no-repeat center;

}

#pic img{

width: 400px;

height: 400px;

}

#pic ul{

width: 50px;

position: absolute;

top: 0;

right: -70px;

}

li{

width: 40px;

height: 40px;

margin-bottom:10px;

background-color: pink;

float: left;

}

#pic span{

position: absolute;

bottom: 10px;

left: 0;

}

#pic p,#pic span{

width: 400px;

height: 20px;

}

#pic p{

position: absolute;

top: 10px;

left: 0;

}

.active{

background-color: red;

}

</style>

<body>

<p>qwrwe</p>

<span>werwer</span>

<ul>

</ul>

</div>

window.onload=function(){

//存放旧li

var oldLi=null;

var num=0;

var oPic = document.getElementById('pic');

var oImg = oPic.getElementsByTagName('img')[0];

var oUL = oPic.getElementsByTagName('ul')[0];

var oSpan= oPic.getElementsByTagName('span')[0];

var oP = oPic.getElementsByTagName('p')[0];

var oLi= oUL.getElementsByTagName('li');

var arr=['image/1.jpg','image/2.jpg','image/3.jpg','image/4.jpg'];

var aText = ['图片1','图片2','图片3','图片4'];

for(var i=0;i<arr.length;i++){

//动态添加元素

oUL.innerHTML+='<li></li>';

}

// 旧li就等于当前的

oldLi=oLi[num];

// 初始化

oImg.src=arr[num];

oP.innerHTML=num+1+'/'+arr.length;

oSpan.innerHTML=aText[num];

oLi[num].className='active';

for(var i=0;i<arr.length;i++){

// 给元素自定义属性

oLi[i].index=i;

oLi[i].onclick=function(){

// 当元素被点击时图片文字信息都一起变化

oImg.src=arr[this.index];

oP.innerHTML=1+this.index+'/'+arr.length;

oSpan.innerHTML=aText[this.index];

// 清空上一个当前添加

oldLi.className='';

//将上一个给当前

oldLi=this;

this.className='active';

}

</script>

</body>

</html>

(3)js移动图片扩展阅读：

注意事项

1、可以通过JS删除和添加hidden属性，改用style.display="none"和style.display="inline"来实现隐藏和显示。

2、button属性，主要的问题时button样式的问题，如何才能做一个好看的button，通过查找找到了设置button相关的值。

border:none; 设置按钮无边框

outline:none;消除按钮点击后出现的表示被点击的边框

background：url(...)按钮背景图片

text-shadow: 0 1px 1px rgba(0,0,0,.3);文字阴影

box-shadow: 0 5px 7px rgba(0,0,0,.2);按钮阴影

border-radius:15px;按钮边框圆角

4. js制作鼠标移动到图片上的动画

//html
onmouseover=mouseOver()换成onmouseover=mouseOver(this)
onmouseout=mouseOut()换成onmouseout=mouseOut(this)
//js更改透明度即可，不需要换图片
functionmouseOver(obj){
obj.style.opacity=0.5;
}
functionmouseOut(obj){
obj.style.opacity=1;
}

5. JS控制图片向左向右移动的代码

这段代码可以： <!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=gb2312" /> <title>图片</title> <script language="javascript">  </script> <style type="text/css">  </style> </head> <body>  <DIV class=blk_18><A onmouseup=ISL_StopUp_1() class=LeftBotton onmousedown=ISL_GoUp_1() onmouseout=ISL_StopUp_1() href="javascript:void(0);" target=_self></A> <DIV class=pcont id=ISL_Cont_1> <DIV class=ScrCont> <DIV id=List1_1><A class=pl href=" http://info.china.alibaba.com/news/detail/v3000103-d1002527920.html" target=_blank><IMG height=72 alt=20-50元夏装抢疯 src=" http://www..com/img/_logo.gif" width=96>美女小凡最新夏装</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v5000180-d1002468482.html" target=_blank><IMG height=72 alt=韩国人气小耳环 src=" http://www..com/img/_logo.gif" width=96>韩国人气小耳环</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v9-d1002531301.html" target=_blank><IMG height=72 alt=3万6超值装修88平 src=" http://www..com/img/_logo.gif" width=96>3万6超值装修88平</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v8-d1002530067.html" target=_blank><IMG height=72 alt=牛干巴敲开财富门 src=" http://www..com/img/_logo.gif" width=96>牛干巴敲开财富门</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v5003519-d1002285304.html" target=_blank><IMG height=72 alt=4K至7K高性能本本 src=" http://www..com/img/_logo.gif" width=96>4K至7K高性能本本</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v5001800-d1002511645.html" target=_blank><IMG height=72 alt=7万装修102平婚房 src=" http://www..com/img/_logo.gif" width=96>7万装修102平婚房</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v5003463-d1002527336.html" target=_blank><IMG height=72 alt=最新小车节油为主 src=" http://www..com/img/_logo.gif" width=96>最新小车节油为主</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v5003000-d1002505656.html" target=_blank><IMG height=72 alt="热门项目 BT烤翅" src=" http://www..com/img/_logo.gif" width=96>热门项目 BT烤翅</A><A class=pl href=" http://info.china.alibaba.com/news/detail/v3000103-d1002421590.html" target=_blank><IMG height=72 alt=流行T恤+裤装 src=" http://www..com/img/_logo.gif" width=96>要显瘦就这么穿！</A> </DIV> <DIV id=List2_1></DIV></DIV></DIV><A onmouseup=ISL_StopDown_1() class=RightBotton onmousedown=ISL_GoDown_1() onmouseout=ISL_StopDown_1() href="javascript:void(0);" target=_self></A></DIV> <SCRIPT type=text/javascript>  </SCRIPT>  </body> </html>

6. javascript让图片移动的函数

<img src="*.jpg" id="tImg" style="position:absolute"/><input type="button" value="开始滚动" onclick="move()" />
<script>
//使图片运动的方法
function move(){
var imgLeft=img.offsetLeft;//取得图像当前的left值
var speed=10;
if(imgLeft<1000){
img.style.left+=speed+"px"; //操作img的style属性使之运动
setTimeout(move,50)//定时的调用当前这个方法
}

}

</script>

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js移动图片

(3)js移动图片扩展阅读：

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