<img src="D:\\file\\2007518143110.jpg" onmouseup="showCoordinate(this);" onmousedown="showCoordinate(this);" width="330" height="90">
我觉得你这个写的就没有问题了,调用一下onmouseup和onmousedown这两个事件就可以得到第一次按下的值和你托到鼠标以后的值,两个相减就得到了你托动的宽和高。
你试下吧
我觉得你这个写的就没有问题了,调用一下onmouseup和onmousedown这两个事件就可以得到第一次按下的值和你托到鼠标以后的值,两个相减就得到了你托动的宽和高。
你试下吧
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>新建网页 4 </title>
</head>
<body>
<br>X: <input type="text" id="X" readonly>
Y: <input type="text" id="Y" readonly>
拉伸长: <input type="text" id="M" readonly>
拉伸宽: <input type="text" id="N" readonly>
<script language="javascript">
var x0, y0, flag=false;
function getCoordinate(obj){
var r = getAbsolutePos(obj);
var x = document.getElementById("X");
var y = document.getElementById("Y");
x0 = event.clientX -r.x-3;
y0 = event.clientY -r.y-3;
x.value = x0;
y.value = y0;
flag =true;
} function showCoordinate(obj){
if (flag) {
var r = getAbsolutePos(obj);
var x = document.getElementById("X");
var y = document.getElementById("Y");
var m = document.getElementById("M");
var n = document.getElementById("N");
x.value = event.clientX -r.x-3;
y.value = event.clientY -r.y-3;
m.value = event.clientX -r.x-3-x0;
n.value = event.clientY -r.y-3-y0;
}
}
function getAbsolutePos(el) {
var r = { x: el.offsetLeft, y: el.offsetTop };
if (el.offsetParent) {
var tmp = getAbsolutePos(el.offsetParent);
r.x += tmp.x;
r.y += tmp.y;
}
return r;
}
function setCoordinate(){
flag=false;
}
</script>
<table border="1" width="100%" id="table1">
<tr>
<td width="181" height="210"> </td>
<td height="210">
</td>
<td height="210"> </td>
</tr>
<tr>
<td width="181" height="172"> </td>
<td height="172">
<p align="center">
<div onmousedown="getCoordinate(this);" onmousemove="showCoordinate(this);" onmouseup="setCoordinate();" style=" width:330px; height:90px; background-color:#EEEEEE"> </div></td>
<td height="172"> </td>
</tr>
<tr>
<td width="181"> </td>
<td>
</td>
<td> </td>
</tr>
<tr>
<td width="181"> </td>
<td> </td>
<td> </td>
</tr>
</table>
</body>
</html>