js实现键盘Enter键提交表单的方法

//执行键盘按键命令function keyDown(e){  var keycode = 0; //IE浏览器 if(CheckBrowserIsIE()){  keycode = event.keyCode; }else{ //火狐浏览器 keycode = e.which; } if (keycode == 13 ) //回车键是13 {  //document.getElementById("login").click();  document.getElementById("loginform").submit(); }}//判断访问者的浏览器是否是IEfunction CheckBrowserIsIE(){ var result = false; var browser = navigator.appName; if(browser == "Microsoft Internet Explorer"){  result = true; } return result;}

function document.onkeydown(){   if(event.keyCode==13)   document.getElementById('loginFrom').submit();}