概述
anchors属性返回当前文档中的所有锚点元素.
语法
nodeList = document.anchors
例子
if ( document.anchors.length >= 5 ) {
dump("dump found too many anchors");
window.location = "http://www.google.com";
}
下例自动生成一个目录列表,包含了到每个段落的锚点.
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript" charset="utf-8">
function init() {
var toc = document.getElementById("toc");
var i, li, newAnchor;
for (i = 0; i < document.anchors.length; i++) {
li = document.createElement("li");
newAnchor = document.createElement('a');
newAnchor.href = "#" + document.anchors[i].name;
newAnchor.innerHTML = document.anchors[i].text;
li.appendChild(newAnchor);
toc.appendChild(li);
}
}
</script>
</head>
<body onload="init()">
<h1>Title</h1>
<a name="contents"><h2>Contents</h2></a>
<ul id="toc"></ul>
<a name="plants"><h2>Plants</h2></a>
<ol>
<li>Apples</li>
<li>Oranges</li>
<li>Pears</li>
</ol>
<a name="veggies"><h2>Veggies</h2></a>
<ol>
<li>Carrots</li>
<li>Celery</li>
<li>Beats</li>
</ol>
</body>
</html>
备注
由于向后兼容的原因,该属性只返回那些拥有name属性的a元素,而不是那些拥有id属性的a元素.