是否可以通过编程方式模拟按键事件？ [英] Is it possible to simulate key press events programmatically?

问题描述

是否可以在JavaScript中以编程方式模拟按键事件？

Is it possible to simulate key press events programmatically in JavaScript?

推荐答案

在两个webkit中均可使用的非jquery版本和gecko：

A non-jquery version that works in both webkit and 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);

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