Prototype - remove() 方法
此方法从文档中完全删除元素并返回它。
语法
element.remove();
返回值
返回已删除的 HTML 元素。
示例
<html>
<head>
<title>Prototype examples</title>
<script type = "text/javascript" src = "/javascript/prototype.js"></script>
<script>
function showResult() {
var str = $('mutsu').remove();
alert("Value of str : " + str.innerHTML );
var str = $('ida-red').remove();
alert("Value of str : " + str.innerHTML );
}
</script>
</head>
<body>
<p>单击按钮查看结果。</p>
<ul>
<li id = "golden-delicious">Golden Delicious</li>
<li id = "mutsu">Mutsu</li>
<li id = "mcintosh">McIntosh</li>
<li id = "ida-red">Ida Red</li>
</ul>
<input type = "button" value = "Show Result" onclick = "showResult();"/>
</body>
</html>

prototype_element_object.html