How to simulate real keyboard keypress in javascript?

by lindsey.homenick , in category: Javascript , 5 months ago

How to simulate real keyboard keypress in javascript?

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1 answer

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by rollin , 5 months ago

@lindsey.homenick 

There are a few different ways to simulate a real keyboard keypress in JavaScript. Here are two common methods:

  1. Using the dispatchEvent method: // Create a new KeyboardEvent with the specified key const event = new KeyboardEvent('keydown', { key: 'Enter' }); // Dispatch the event on a target element targetElement.dispatchEvent(event); This method creates a new KeyboardEvent object and dispatches it to a specified target element. You can customize the key by passing it as an option in the event constructor. Additionally, you can also listen for other types of events such as keyup or keypress.
  2. Using the createEvent and initKeyboardEvent methods (deprecated): // Create a new keyboard event const event = document.createEvent('KeyboardEvent'); // Initialize the event with the specified characteristics event.initKeyboardEvent('keydown', true, true, window, false, false, false, false, 13, 0); // Dispatch the event on a target element targetElement.dispatchEvent(event); This method uses the deprecated createEvent and initKeyboardEvent methods to create and initialize a keyboard event. You can customize various characteristics of the event, such as setting modifier keys or specifying the keyCode.


Note that these methods can only simulate a keypress event, they cannot directly trigger the associated functionalities (e.g., submitting a form by simulating 'Enter' keypress). The functionality will still depend on the specific behavior of the target element.