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How Can I Programmatically Trigger Input Events in JavaScript/jQuery Without User Interaction?

Patricia Arquette
Patricia ArquetteOriginal
2024-11-24 01:16:10847browse

How Can I Programmatically Trigger Input Events in JavaScript/jQuery Without User Interaction?

Trigger Input Events in JavaScript/jQuery

Q: How do you simulate a user typing text in an input box, triggering event handlers, without adding actual text?

A: Direct calls to specific events can be made:

$(function() {
    $('item').keydown();
    $('item').keypress();
    $('item').keyup();
    $('item').blur();
});

For completeness, consider triggering .focus() and .change(). For simulating key-events with specific keys, use:

$(function() {
    var e = $.Event('keypress');
    e.which = 65; // Character 'A'
    $('item').trigger(e);
});

For browser compatibility with the .which property, refer to the resource: [jQuery Event Keypress: Which key was pressed?](https://stackoverflow.com/questions/12195223/jquery-event-keypress-which-key-was-pressed).

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