javascript - 是否可以通过编程模拟按键事件？(Is it possible to simulate key press events programmatically?)

Question

是否可以在JavaScript中以编程方式模拟按键事件？

  ask by tan translate from so

Answer 1

A non-jquery version that works in both webkit and gecko:

(在webkit和gecko中都可以使用的非jquery版本：)

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,    // view: should be window
  false,     // ctrlKey
  false,     // altKey
  false,     // shiftKey
  false,     // metaKey
  40,        // keyCode: unsigned long - the virtual key code, else 0
  0          // charCode: unsigned long - the Unicode character associated with the depressed key, else 0
);
document.dispatchEvent(keyboardEvent);