為什么只出現一個hello java
<!DOCTYPE?html>
<html>
<head>
<meta?charset="UTF-8">
<title>Document</title>
<script?type="text/javascript">
window.onload=function(){
????????var?myvar?=?document.getElementById("icon");
????????document.write(myvar.innerHTML);
????????myvar.innerHTML?=?"hello?java";?
????????document.write(myvar.innerHTML);}
</script>
</head>
<body>
<p?id?=?"icon">
??????hello?javascript
</p>
</body>
</html>
2015-11-08
?document.write(myvar.innerHTML);是空值
2015-10-29
=換成 +=
2015-10-29
innerHTML 改變的是節點 所有內容~節點內容就變成了 <P>hello java</p>
2015-10-29
不應該是hello javascript hello java hello java嗎
2015-10-29
hello javascript hello java