JavaScript Reference/Javascript Properties/coords
Версия от 18:30, 25 мая 2010; (обсуждение)
"coords" Example
<!--
Example revised from
The Web Programmer"s Desk Reference
by Lazaro Issi Cohen and Joseph Issi Cohen
ISBN: 1593270119
Publisher: No Starch Press 2004
-->
<html>
<head>
<script language="JavaScript">
function function1() {
document.all.area1.coords = "0, 0, 100, 50";
}
function function2() {
document.all.area2.coords = "100, 0, 200, 50";
document.all.area2.noHref = "true";
}
function function3() {
document.all.area3.coords = "0, 50, 100, 100";
}
function function4() {
document.all.area4.coords = "100, 50, 200, 100";
}
function function5() {
document.getElementById("area1").coords = "0, 0, 0, 0";
document.getElementById("area2").coords = "0, 0, 0, 0";
document.getElementById("area3").coords = "0, 0, 0, 0";
document.getElementById("area4").coords = "0, 0, 0, 0";
}
</script>
</head>
<body>
<img src="yourimage.gif" id="myImg" alt="" width="200" height="100" usemap="#myMap2">
<map name="myMap2">
<area id="area1"
shape="rect"
href="http://www.wbex.ru"
alt="wbex.ru"
onClick="return false">
<area id="area2"
shape="rect"
href="http://www.wbex.ru" nohref="true"
alt="wbex.ru home page"
onClick="return false">
<area id="area3"
shape="rect"
href="http://www.wbex.ru"
alt="wbex home page"
onClick="return false">
<area id="area4"
shape="rect"
href="http://www.wbex.ru"
alt="wbex.ru"
onClick="return false">
</map>
<br>
<input type="button" value="Make area 1 active" onClick="function1();">
<input type="button" value="Make area 2 active" onClick="function2();">
<input type="button" value="Make area 3 active" onClick="function3();">
<input type="button" value="Make area 4 active" onClick="function4();">
<button onclick="function5();">Restore areas to inactive</button>
<button onclick="alert(myImg.isMap);">IS MAP</button>
<button onclick="alert(area2.noHref);">noHref for Area 2</button>
</body>
</html>
"coords" is applied to
+----------------+--------------------------------------------------------------+
| Applied_To |<a> <area> |
+----------------+--------------------------------------------------------------+
"coords" Syntax and Note
Note:
Read and write property.
Sets the the element clickable region coordinates.
Syntax:
document.getElementById("elementID").coords = value
document.all.elementID.coords = value // IE only
Values depend on the shape attribute"s value:
shape = circ or circle x, y (coordinates of the center), r (radius).
shape = rect or rectangle x1, y1 (coordinates of the upper-left corner),
x2, y2 (coordinates of the lower-right corner).
shape = poly or polygon x1, y1, x2, y2, x3, y3, . . .
pairs of coordinates for each vertex of the polygon.