女巫,)

/*
This code is for example. In real life you have plugins like :
https://code.google.com/p/jquery-utils/wiki/JqueryUtils
https://github.com/jeresig/jquery.hotkeys/blob/master/jquery.hotkeys.js
https://github.com/madrobby/keymaster
http://dmauro.github.io/Keypress/

http://api.jquery.com/keydown/
http://api.jquery.com/keypress/
*/

var event2key = {'97':'a', '98':'b', '99':'c', '100':'d', '101':'e', '102':'f', '103':'g', '104':'h', '105':'i', '106':'j', '107':'k', '108':'l', '109':'m', '110':'n', '111':'o', '112':'p', '113':'q', '114':'r', '115':'s', '116':'t', '117':'u', '118':'v', '119':'w', '120':'x', '121':'y', '122':'z', '37':'left', '39':'right', '38':'up', '40':'down', '13':'enter'};

var documentKeys = function(event) {
    console.log(event.type, event.which, event.keyCode);

    var keycode = event.which || event.keyCode; // par exemple : 112
    var myKey = event2key[keycode]; // par exemple : 'p'

    switch (myKey) {
        case 'a':
            $('div').css({
                left: '+=50'
            });
            break;
        case 'z':
            $('div').css({
                left: '-=50'
            });
            break;
        default:
            //console.log('keycode', keycode);
    }
};

$(document).on('keydown keyup keypress', documentKeys);

演示:http://jsfiddle.net/molokoloco/hgXyq/24/

试试这个

$('#searchbox input').bind('keypress', function(e) {
    if(e.keyCode==13){
        // Enter pressed... do anything here...
    }
});

试试这个:

jQuery('#myInput').keypress(function(e) {
    code = e.keyCode ? e.keyCode : e.which;
    if(code.toString() == 13) {
        alert('You pressed enter!');
    }
});

编辑:这只适用于IE…

我知道这是一个旧帖子，但有人可能会发现这很有用。

键事件是映射的，所以除了使用keycode值，还可以使用key值使其更具可读性。

$(document).ready( function() {
    $('#searchbox input').keydown(function(e)
    {
     setTimeout(function ()
     { 
       //rather than using keyup, you can use keydown to capture 
       //the input as it's being typed.
       //You may need to use a timeout in order to allow the input to be updated
     }, 5);
    }); 
    if(e.key == "Enter")
    {
       //Enter key was pressed, do stuff
    }else if(e.key == "Spacebar")
    {
       //Spacebar was pressed, do stuff
    }
});

这里是一个小抄与映射键，我从这个博客

．.． 这个例子阻止表单提交(通常是捕获击键#13时的基本意图):

$('input#search').keypress(function(e) {
  if (e.which == '13') {
     e.preventDefault();
     doSomethingWith(this.value);
   }
});

我将用e.preventDefault();来补充解决方案代码。 在输入字段的情况下，我们不参加提交的形式进入按下

var code = (e.keyCode ? e.keyCode : e.which);
 if(code == 13) { //Enter keycode
   e.preventDefault();
   //Do something
 }