<!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");????
console.log(mychar);
alert(mychar)?;
document.write("結(jié)果:"?+?mychar);???
?</script>
?</body>
?</html>
為什么 console.log(mychar) 和 alert(mychar) 調(diào)換位置，在控制臺(tái)輸出的結(jié)果不一樣？
AllySu
2018-05-09 21:01:02
