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我正在嘗試使用動態調整大小。我知道一些JavaScript,但它是非常新的。我收到以下錯誤:index.html的:20遺漏的類型錯誤:無法讀取屬性「的getElementsByTagName」空的javascript圖像映射調整大小問題
此錯誤是行:面積= map.getElementsByTagName(「區」),
謝謝Teemu爲腳本Dynamically resizing Image-maps and images
<html>
<head>
<link rel="stylesheet" type="text/css" href="PB.css">
</head>
<body>
<script>
window.onload = function() {
var ImageMap = function (map) {
var n,
areas = map.getElementsByTagName('area'),
len = areas.length,
coords = [],
previousWidth = 1280;
for (n = 0; n < len; n++) {
coords[n] = areas[n].coords.split(',');
}
this.resize = function() {
var n, m, clen,
x = document.body.clientWidth/previousWidth;
for (n = 0; n < len; n++) {
clen = coords[n].length;
for (m = 0; m < clen; m++) {
coords[n][m] *= x;
}
areas[n].coords = coords[n].join(',');
}
previousWidth = document.body.clientWidth;
return true;
};
window.onresize = this.resize;
},
imageMap = new ImageMap(document.getElementById('planetbobmap'));
imageMap.resize();
return;
}
</script>
<img src="Planet Bob.jpg" alt="PlanetBob" usemap="#planetbobmap" border="0" width="1280" height="720" />
<map name="planetbobmap">
<area shape="rect" coords="190,140,435,200" alt="skills" href="Skills.jpg" target="_blank" />
<area shape="rect" coords="890,140,1250,200" alt="projects" href="Projects.jpg" target="_blank" />
<area shape="rect" coords="50,460,440,525" alt="schooling" href="Schooling.jpg" target="_blank" />
<area shape="rect" coords="900,460,1230,525" alt="contact" href="Contact.jpg" target="_blank" />
<area shape="circle" coords="652,352,162" alt="Resume" href="Robert J Norton Resume.pdf" target="_blank" />
</map>
</body>
</html>
而'map'沒有在'function(map)'函數中定義... –
那麼,這個問題就解決了。似乎該腳本仍未改變圖像映射。在添加地圖標識之後,雖然沒有顯示檢查錯誤。 –