摘要：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,&
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script>
var x = 18;
var a = 1,b = 2,c = 3,d = 4;
document.write("x=" + x + "</br>");
document.write("a=" + a + "</br>");
document.write("b=" + b + "</br>");
document.write("c=" + c + "</br>");
document.write("d=" + b + "</br>");
var num1 = 123;
var num2 = "heill mike";
var num3 = true;
document.write(typeof num1);
document.write(typeof num2);
</script>
<title>js变量</title>
</head>
<body>
</body>
</html>
批改老师：灭绝师太批改时间：2018-11-22 09:08:43
老师总结：变量声明和类型使用后面需要非常熟悉，要巩固练习奥
