jQuery focus() example

jQuery focus() function is used to bind an event handler to the "focus" JavaScript event or trigger that event on an element.

Syntax

$(selector).focus()
It triggers the focus event for selected elements.
$(selector).focus(function)
It adds a function to the focus event.

Example

Fire focus.
<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <title>focus demo</title>
    <style>
        span {
            display: none;
        }
    </style>
    <script src="https://code.jquery.com/jquery-3.4.1.js"></script>
</head>

<body>

    <p><input type="text"> <span>focus fire</span></p>
    <p><input type="password"> <span>focus fire</span></p>

    <script>
        $("input").focus(function() {
            $(this).next("span").css("display", "inline").fadeOut(1000);
        });
    </script>

</body>

</html>

More Examples

To stop people from writing in text input boxes, try:
$( "input[type=text]" ).focus(function() {
  $( this ).blur();
});
To focus on a login input box with id 'login' on page startup, try:
$( document ).ready(function() {
  $( "#login" ).focus();
});

References



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