javascript类型
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here4</title></head><body><script type="text/javascript">document.write("javascript 变量");</script><script type="text/javascript">var a = 13;var b = "13"; var c = "行有不得，反求诸己";var tab = a/b;alert("04a");alert(a); //输出13alert(b); //输出13alert(c); //输出行有不得，反求诸己alert(tab); //输出1alert("a==b的结果:"+(a==b)); //输出truealert("a===b的结果:"+(a===b)); //输出falsealert("a+b:"+(a+b)); //输出1313</script></body></html>?