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How can I set a checkbox as “checked” using jQuery?

A developer may be working on a survey website and want to “check” some checkboxes according to the user’s previous choices. In this case, the developer could use jQuery to check the checkboxes by setting the “checked” attribute to “true” when the page loads, based on the user’s previous choices stored in a database.

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December 6th, 2022Front-endJavaScript

1 Answer(s)

answer
@JaySODec 06, 2022 — Using the latest version of jQuery, you can use the prop function and set the checked property to true. For example, if you have a checkbox with the ID myCheckbox, you can use the following code to check the checkbox:


$('#myCheckbox').prop('checked', true);


Here's a more complete example that shows how to check a checkbox when a button is clicked:


// This function is called when the button is clicked
function checkTheBox() {
// Check the checkbox
$('#myCheckbox').prop('checked', true);
}

// Attach the function to the button's click event
$('#myButton').click(checkTheBox);
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