JavaScript Image Maps

Adding some JavaScript

We can add events (that can call a JavaScript) to the <area> tags inside the image map. The <area> tag supports the onClick, onDblClick, onMouseDown, onMouseUp, onMouseOver, onMouseMove, onMouseOut, onKeyPress, onKeyDown, onKeyUp, onFocus, and onBlur events.

Here's the HTML image-map example, with some JavaScript added:

Example:

<html>

<head>

<script type="text/javascript">

function writeText(txt)

{

document.getElementById("desc").innerHTML=txt;

}

</script>

</head>



<body>

<img src="planets.gif" width="145" height="126"

alt="Planets" usemap="#planetmap" />



<map name="planetmap">

<area shape ="rect" coords ="0,0,82,126"

onMouseOver="writeText('The Sun and the gas giant planets like Jupiter

are by far the largest objects in our Solar System.')"

href ="sun.htm" target ="_blank" alt="Sun" />



<area shape ="circle" coords ="90,58,3"

onMouseOver="writeText('The planet Mercury is very difficult to study

from the Earth because it is always so close to the Sun.')"

href ="mercur.htm" target ="_blank" alt="Mercury" />



<area shape ="circle" coords ="124,58,8"

onMouseOver="writeText('Until the 1960s, Venus was often considered a

twin sister to the Earth because Venus is the nearest planet to us, and

because the two planets seem to share many characteristics.')"

href ="venus.htm" target ="_blank" alt="Venus" />

</map>



<p id="desc"></p>



</body>

</html>

JavaScript Image Maps

Adding some JavaScript

Web Tutorials