04.html
来自「希望大家多多交流」· HTML 代码 · 共 21 行
HTML
21 行
<html>
<head>
<title>JavaScript变量</title>
</head>
<body>
<script language="JavaScript">
var a;
a = 2;
var b = 3.14;
var c = "Hello,你好";
var d = 5, e = 6;
b = c + d;
document.write(b);
document.write("<br>");
//变量未经声明，直接使用
f = "Welcome to JavaScript";
document.write(f);
</script>
</body>
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