<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>JS OBJECT</title> </head> <body> <script> /* 创建js对象方式和pathon一样 */ function f() { var a = 2; b = 5;//去掉var就是全局变量，这样的话f()运行后加载到内存后alert(b)就能获取到b的值 return a; } f(); alert(f()); //获取返回值a alert(b); //----------------------------------------------------------------------------------- var ret = 0; function f1() { ret = c +d; return ret; } var c = 1; var d = 2; var rets = f1(c,d); alert(rets); //----------------------------------------------------------------------------------- function e(e,f) { alert(e+f); } var e = 1; var f = 2; e(e,f); //这里e=1 就是1(1,2)所以这里不会执行，会报错，因为不是函数 //----------------------------------------------------------------------------------- </script> </body> </html>