為什么輸出這個結果：[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("結果:"+mychar); //輸出獲取的P標簽。?
</script>
</body>
</html>
2020-11-18
確實到這不明白為什么輸出的是ull或
[object HTMLParagraphElement]
2020-09-02
document.write("結果:"+mychar.innerHTML);