JS网页图片查看器(兼容IE、FF)可控制图片放大缩小移动- Javascript

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Javascript 中的 JS网页图片查看器(兼容IE、FF)可控制图片放大缩小移动

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-10-12 浏览: 223 ::

收藏到网摘: n/a

javascript css float属性的特殊写法 jQuery实例入门(表格隔行变色)

这是一个网上比较常用的JS网页图片查看器，可控制图片放大、缩小、还原、移动位置、拖动等操作，并且兼容IE浏览器和FF火狐浏览器，可以用在图片网站、地图网站等

修正了网上其它版本的一些错误。完美无错版

点击运行可以看到效果:

<html>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>JS网页图片查看器－可控制图片放大缩小还原移动效果</title>
<META HTTP-EQUIV="imagetoolbar" CONTENT="no">
<style type="text/css">
body { font-family: "Verdana", "Arial", "Helvetica", "sans-serif"; font-size: 12px; line-height: 180%; }
td { font-size: 12px; line-height: 150%; }
</style>
<SCRIPT language=JavaScript>
drag = 0
move = 0
// 拖拽对象
// 参见：http://blog.sina.com.cn/u/4702ecbe010007pe
var ie=document.all;
var nn6=document.getElementById&&!document.all;
var isdrag=false;
var y,x;
var oDragObj;
function moveMouse(e) {
if (isdrag) {
oDragObj.style.top = (nn6 ? nTY + e.clientY - y : nTY + event.clientY - y)+"px";
oDragObj.style.left = (nn6 ? nTX + e.clientX - x : nTX + event.clientX - x)+"px";
return false;
}
}
function initDrag(e) {
var oDragHandle = nn6 ? e.target : event.srcElement;
var topElement = "HTML";
while (oDragHandle.tagName != topElement && oDragHandle.className != "dragAble") {
oDragHandle = nn6 ? oDragHandle.parentNode : oDragHandle.parentElement;
}
if (oDragHandle.className=="dragAble") {
isdrag = true;
oDragObj = oDragHandle;
nTY = parseInt(oDragObj.style.top+0);
y = nn6 ? e.clientY : event.clientY;
nTX = parseInt(oDragObj.style.left+0);
x = nn6 ? e.clientX : event.clientX;
document.onmousemove=moveMouse;
return false;
}
}
document.onmousedown=initDrag;
document.onmouseup=new Function("isdrag=false");
function clickMove(s){
if(s=="up"){
dragObj.style.top = parseInt(dragObj.style.top) + 100;
}else if(s=="down"){
dragObj.style.top = parseInt(dragObj.style.top) - 100;
}else if(s=="left"){
dragObj.style.left = parseInt(dragObj.style.left) + 100;
}else if(s=="right"){
dragObj.style.left = parseInt(dragObj.style.left) - 100;
}
}
function smallit(){
var height1=images1.height;
var width1=images1.width;
images1.height=height1/1.2;
images1.width=width1/1.2;
}
function bigit(){
var height1=images1.height;
var width1=images1.width;
images1.height=height1*1.2;
images1.width=width1*1.2;
}
function realsize()
{
images1.height=images2.height;
images1.width=images2.width;
block1.style.left = 0;
block1.style.top = 0;
}
function featsize()
{
var width1=images2.width;
var height1=images2.height;
var width2=360;
var height2=200;
var h=height1/height2;
var w=width1/width2;
if(height1<height2&&width1<width2)
{
images1.height=height1;
images1.width=width1;
}
else
{
if(h>w)
{
images1.height=height2;
images1.width=width1*height2/height1;
}
else
{
images1.width=width2;
images1.height=height1*width2/width1;
}
}
block1.style.left = 0;
block1.style.top = 0;
}
</SCRIPT>
<script language="JavaScript" type="text/JavaScript">
</script>
<style type="text/css">
</style>
</head>
<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" oncontextmenu="return false" ondragstart="return false" onselectstart ="return false" onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="return false" onmouseup="document.selection.empty()" style="overflow-y:hidden;overflow-x:hidden;">
<div id="Layer1">
<table border="0" cellspacing="2" cellpadding="0">
<tr>
<td> </td>
<td><img src="/upload/tech/20091012/20091012093554_cf67355a3333e6e143439161adc2d82e.gif" width="20" height="20" style="cursor:hand" title="向上"></td>
<td> </td>
</tr>
<tr>
<td><img src="/upload/tech/20091012/20091012093555_bc6dc48b743dc5d013b1abaebd2faed2.gif" width="20" height="20" style="cursor:hand" title="向左"></td>
<td><img src="/upload/tech/20091012/20091012093555_170c944978496731ba71f34c25826a34.gif" width="20" height="20" style="cursor:hand" title="还原"></td>
<td><img src="/upload/tech/20091012/20091012093556_e2c0be24560d78c5e599c2a9c9d0bbd2.gif" width="20" height="20" style="cursor:hand" title="向右"></td>
</tr>
<tr>
<td> </td>
<td><img src="/upload/tech/20091012/20091012093556_49c9adb18e44be0711a94e827042f630.gif" width="20" height="20" style="cursor:hand" title="向下"></td>
<td> </td>
</tr>
<tr>
<td> </td>
<td><img src="/upload/tech/20091012/20091012093559_c32d9bf27a3da7ec8163957080c8628e.gif" width="20" height="20" style="cursor:hand" title="放大"></td>
<td> </td>
</tr>
<tr>
<td> </td>
<td><img src="/upload/tech/20091012/20091012093600_3a835d3215755c435ef4fe9965a3f2a0.gif" width="20" height="20" style="cursor:hand" title="缩小"></td>
<td> </td>
</tr>
</table>
</div>
<div id='hiddenPic' style='position:absolute; left:0px; top:0px; width:0px; height:0px; z-index:1; visibility: hidden;'><img name='images2' src='/upload/tech/20091012/20091012093600_a9a1d5317a33ae8cef33961c34144f84.jpg' border='0'></div>
<div id='block1' onmouseout='drag=0' onmouseover='dragObj=block1; drag=1;' style='z-index:10; height: 0; left: 0px; position: absolute; top: 0px; width: 0' class="dragAble"> <img name='images1' src='/upload/tech/20091012/20091012093600_a9a1d5317a33ae8cef33961c34144f84.jpg' border='0'></div>
</body>
</html>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

javascript css float属性的特殊写法 jQuery实例入门(表格隔行变色)

Javascript 中的 JS网页图片查看器(兼容IE、FF)可控制图片放大缩小移动

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