網(wǎng)頁圖片放大預(yù)覽網(wǎng)頁特效代碼
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>（js圖片放大預(yù)覽鼠標(biāo)滑過的任意位置）_webjx.com</title>
<script language="JavaScript">
<!--
var srcX = 1024; //原圖大小,可以任意設(shè)置
var srcY = 768;
var bigX = 300; //預(yù)覽窗大小,可以任意設(shè)置
var bigY = 225;
var smallX = 300; //縮略圖寬度
var smallY = srcY * smallX / srcX;
var viewX = bigX / srcX * smallX; //預(yù)覽范圍
var viewY = bigY / srcY * smallY;
var bl = srcX / smallX;//縮小比例
var border = 1; //邊框
window.onload=function (){
head.innerHTML="JS+CSS實(shí)現(xiàn)圖片放大預(yù)覽效果,鼠標(biāo)可以滑動(dòng)圖片任意地方";
smallpic.width=smallX;
smallpic.height=smallY;
bigpic.width=srcX;
bigpic.height=srcY;
view.style.width=viewX;
view.style.height=viewY;
smallbox.style.borderWidth=border;
bigbox.style.borderWidth=border;
if (window.event){
smallbox.style.width=smallpic.offsetWidth+border*2;
smallbox.style.height=smallpic.offsetHeight+border*2;
bigbox.style.width=bigX+border*2;
bigbox.style.height=bigY+border*2;
}else{
smallbox.style.width=smallpic.offsetWidth;
smallbox.style.height=smallpic.offsetHeight;
bigbox.style.width=bigX;
bigbox.style.height=bigY;
}
move(event);
}
function move(e){
var e = window.event?window.event:e;
var iebug = 0;
if (window.event){
var vX = e.offsetX - viewX/2;
var vY = e.offsetY - viewY/2;
}else{
var vX = e.pageX - viewX/2 - smallbox.offsetLeft - border;
var vY = e.pageY - viewY/2 - smallbox.offsetTop - border;
iebug = 2;
}
if (vX < 0) vX = 0;
if (vY < 0) vY = 0;
if (vX > smallX - viewX - iebug) vX = smallX - viewX - iebug;
if (vY > smallY - viewY - iebug) vY = smallY - viewY - iebug;
bigpico.style.marginLeft = - vX * bl
bigpico.style.marginTop = - vY * bl
view.style.left = vX + smallbox.offsetLeft + border;
view.style.top = vY + smallbox.offsetTop + border;
}
//-->
</script>
<style type="text/css">
<!--
*{padding:0;margin:0}
img{display:block;}
#smallbox{border:1px #c33 solid;float:left;width:0;height:0;overflow:hidden}
#bigbox{border:1px #c33 solid;width:0px;height:0px;float:left;overflow:hidden}
#view{border:1px #ddd solid;width:0px;height:0px;position:absolute}
#head{text-align:center;line-height:40px;font:bold 16px/40px;color:red}
//-->
</style>
<div id="head"></div>
<div id="smallbox"><img src="http://www.shchuan.com/files/090716/1_192312.jpg" name="smallpic" width="300" height="300" border="0" id="smallpic" onmousemove="move(event)" onmouseover="document.getElementById('bigbox').style.display='';document.getElementById('view').style.display=''" onmouseout="document.getElementById('bigbox').style.display='none';document.getElementById('view').style.display='none'"></div>
<div id="bigbox" style="display:none"><div id="bigpico"><img src="http://www.webjx.com/files/090716/1_192312.jpg" name="bigpic" width="300" height="300" border="0" id="bigpic"></div>
</div>
<div id="view" onmousemove="move(event) "style="display:none"></div>
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