UC知道我的第一次javascript程序
来源：百度知道 编辑：UC知道 时间：2024/05/12 16:14:11
小弟初学javascipt,按照教材打了个程序，可是运行没有效果啊．我是自学，找不到人解答，我把我的源代码附上，高手看下哪儿有错误．
<html>
<head>
<script language="JavaScript">
var aBoy= "Charlie Brown"
var hisDog= "snoopy"
function demo(){
var hisDog="Gromit"
var output=hisdog+"does not belong to"+aBoy+".<br>"
document.write(output)
}
</script>
</head>
<body>
<script language="JavaScript">
demo()
document.write(hisDog+"belongs to"+aBoy+".")
</script>
</body>
</html>
<html>
<head>
<script language="JavaScript">
var aBoy= "Charlie Brown"
var hisDog= "snoopy"
function demo(){
var hisDog="Gromit"
var output=hisdog+"does not belong to"+aBoy+".<br>"
document.write(output)
}
</script>
</head>
<body>
<script language="JavaScript">
demo()
document.write(hisDog+"belongs to"+aBoy+".")
</script>
</body>
</html>
var output=hisdog+"does not belong to"+aBoy+".<br>"
这句有错误 应该是 hisDog
注意大小写
句末没有加分号";"
第八行， hisdog -> hisDog
javascript区分大小写hisdog -> hisDog，我调试了。通过。
<html>
<head>
<script language="JavaScript">
var aBoy= "Charlie Brown"
var hisDog= "snoopy"
function demo(){
var hisDog="Gromit"
var output=hisDog+"does not belong to"+aBoy+".<br>"
document.write(output)
}
</script>
</head>
<body>
<script language="JavaScript">
demo()
document.write(hisDog+"belongs to"+aBoy+".")
</script>
</body>
</html>
结果
Gromitdoes not belong toCharlie Brown.
snoopybelongs toCharlie Brown.