JavaScript Reference/Javascript Properties/useMap — различия между версиями

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Текущая версия на 08:22, 26 мая 2010

"useMap" 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="http://www.wbex.ru/style/logo.png" 
     id="myImg" 
     alt="http://www.wbex.ru" 
     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">
</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>



"useMap" is applied to

+----------------+--------------------------------------------------------------+
| Applied_To     |<img>                           <input>                       |
|                |<object> (IE6 only)                                           |
+----------------+--------------------------------------------------------------+



"useMap" Syntax and Note

Note:
Read and write property. 
Sets the URL as a client-side image map.
    
Syntax:
    
document.getElementById("elementID").useMap = value
document.all.elementID.useMap = value // IE only
Источник — «http://wbex.ru/index.php?title=JavaScript_Reference/Javascript_Properties/useMap&oldid=7225»