一個(gè)非jquery版本，適用于webkit和gecko：

var keyboardEvent = document.createEvent("KeyboardEvent");

var initMethod = typeof keyboardEvent.initKeyboardEvent !== 'undefined' ? "initKeyboardEvent" : "initKeyEvent";

keyboardEvent[initMethod](

                   "keydown", // event type : keydown, keyup, keypress

                    true, // bubbles

                    true, // cancelable

                    window, // viewArg: should be window

                    false, // ctrlKeyArg

                    false, // altKeyArg

                    false, // shiftKeyArg

                    false, // metaKeyArg

                    40, // keyCodeArg : unsigned long the virtual key code, else 0

                    0 // charCodeArgs : unsigned long the Unicode character associated with the depressed key, else 0

);

document.dispatchEvent(keyboardEvent);

如果你可以使用jQuery 1.3.1：

function simulateKeyPress(character) {
  jQuery.event.trigger({ type : 'keypress', which : character.charCodeAt(0) });}$(function() {
  $('body').keypress(function(e) {
    alert(e.which);
  });

  simulateKeyPress("e");});