JS Image Maps

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An image-map is an image with clickable regions.
图象映象是图片的可点区域（一图片多个链接区）

Examples
举例

Simple HTML Image map[简单的图象映象]

Image map with added JavaScript[添加JS的图象映象（多了文字的说明）]

HTML Image Maps
HTML 图象映象

From our HTML tutorial we have learned that an image-map is an image with clickable regions. Normally, each region has an associated hyperlink. Clicking on one of the regions takes you to the associated link.
从HTML教程我们已经学过图象映象是图象中可点击的区域。通常每个区域都有一个相关的链接。点击后会带你去相关的连接上。

Example
举例

The example below demonstrates how to create an HTML image map, with clickable regions. Each of the regions is a hyperlink:
下面的例子演示了怎样建立一个HTML图象映象：

<img src ="planets.gif"width ="145" height ="126"alt="Planets"usemap ="#planetmap" />

<map id ="planetmap"name="planetmap"><area shape ="rect" coords ="0,0,82,126"  href ="sun.htm" target ="_blank"  alt="Sun" /><area shape ="circle" coords ="90,58,3"  href ="mercur.htm" target ="_blank"  alt="Mercury" /><area shape ="circle" coords ="124,58,8"  href ="venus.htm" target ="_blank"  alt="Venus" /></map>

Result结果

Adding some JavaScript
添加一些JS

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.
我们给图片内的<area>标签里面添加一些事件（可以叫JS）。<area>标签支持onClick,onDblClick,onMouseDown,onMouseUP,onMouseOver,onMouseMove, onMouseOut, onKeyPress, onKeyDown, onKeyUp, onFocus, 和 onBlur事件

Here's the above example, with some JavaScript added:
给上面的例子加入以下JS：

<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 id ="planetmap" name="planetmap"><area shape ="rect" coords ="0,0,82,126"onMouseOver="writeText('The Sun and the gas giantplanets like Jupiter are by far the largest objectsin our Solar System.')"href ="sun.htm" target ="_blank" alt="Sun" /><area shape ="circle" coords ="90,58,3"onMouseOver="writeText('The planet Mercury is verydifficult to study from the Earth because it isalways 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 wasoften considered a twin sister to the Earth becauseVenus is the nearest planet to us, and because thetwo planets seem to share many characteristics.')"href ="venus.htm" target ="_blank" alt="Venus" /></map> <p id="desc"></p></body></html>

JS Image Maps

Examples举例

HTML Image MapsHTML 图象映象

Example举例

Result结果

Adding some JavaScript添加一些JS

Examples
举例

HTML Image Maps
HTML 图象映象

Example
举例

Adding some JavaScript
添加一些JS