<html>
<head>
<title>獲取HTML檔的指定元素</title>
<script language="JavaScript" >
function getElement1(){
alert(document.all("myH2").tagName);
}
function getElement2(){
alert(myH2.tagName);
}
function showTags(){
alert(document.all.tags("P").length);
}
function showItems(){
var strTags = "";
for (var i=0; i<document.all["myTag"].length; i++){
objEle = document.all("myTag").item(i);
strTags += objEle.tagName + " ";
}
alert(strTags);
}
</script>
</head>
<body id="myBody">
<h2 id="myH2">獲取HTML檔的指定元素</h 2>
<hr>
<p id="myTag">獲取<b id="myTag">HTML</b>檔的元素Body
<p id="myTag"> 獲取<b>HTML</b>檔的元素H2
<h3 id="myTag">獲取<b>HTML</b>檔的元素P</h3>
<form >
<input type="button" onclick="getElement1()" value="獲取指定的元素">
<input type="button" onclick="getElement2()" value="獲取指定的元素">
<input type="button" onclick="showTags()" value="多少個P元素">
<input type="button" onclick="showItems()" value="顯示myTag元素">
</form>
</body>
</html>
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