javascript - onclick 图像部分图像应该改变

Question

我写了一个带有图像的代码。如果我将鼠标悬停在图像的不同部分，则会显示不同的图像。我还编写了一个脚本来更改单击时的图像。但它不起作用。

<img src="ch01ch01.png" width="453" id="image1" height="453" alt="Planets" usemap="#plmap">
<map name="plmap">
    <area shape="poly" coords="172,227,181,224,183,213,189,201,195,193,199,190,199,184,126,93,135,93,123,79,103,96,84,117,68,140,58,162,51,186,48,201,47,214,135,219,130,227,148,227,147,225,151,227,149,223,153,227,153,221,156,225,157,214,160,202,166,190,174,179,176,177,174,174,191,176,192,192,189,189,180,200,174,212,172,224,172,227" id="chapter12" alt="chap12" width="453" height="453"
         onmouseover="document.getElementById('image1').src='ch01ch12.png'" 
         onmouseout="document.getElementById('image1').src='ch01ch01.png'" onclick="changeImage()"/>
    <area shape="poly" coords="173,229,181,229,184,243,192,256,201,265,201,271,179,309,174,302,125,375,106,361,88,342,71,319,59,295,52,270,48,252,47,243,65,240,61,248,147,234,147,236,150,234,150,238,154,234,154,239,156,235,159,246,165,262,175,275,185,284,195,270,184,259,177,249,174,237,173,229" alt="chap11" width="453" height="453"
         onmouseover="document.getElementById('image1').src='ch01ch11.png'" 
         onmouseout="document.getElementById('image1').src='ch01ch01.png'"/>    

<script>
    function changeImage() {
        var temp = document.getElementById('image1');
        temp.src="ch01ch12.png";
    }
</script>

Answer 1

您不能使用像 C:/image.png 这样的本地路径，因为它不是可识别的 URI 方案。相反，将 html 或 js 文件放在与图像相同的文件夹中，src 将如下所示 src="image.png"