script不是可以搜到id嗎為什么還是顯示結(jié)果:[object HTMLParagraphElement]
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>document.getElementById</title>
</head>
<body>
<p id="con">JavaScript</p>
<script type="text/javascript">
? var mychar=document.getElementById("con")
? document.write("結(jié)果:"+mychar); //輸出獲取的P標簽。?
</script>
</body>
</html>
2016-10-14
document.getElementById('con')獲取的只是P標簽(即對象，這里是P標簽），返回的是[object HTMLParagraphElement]，document.getElementById('con').innerHTML獲取的才是P標簽里的內(nèi)容，返回的是JavaScript