How do I programmatically check a radio button in jQuery?

Checking Radio Buttons with jQuery

In jQuery, checking a radio button can be a bit tricky. Here are a few common approaches:

Using .attr()

For jQuery versions prior to 1.6, the following syntax will work:

$("#radio_1").attr('checked', 'checked');

Using .prop()

For jQuery versions 1.6 and above, use the updated syntax:

$("#radio_1").prop("checked", true);

Additional Tips:

• It's recommended to invoke the .change() or .click() methods on the radio button after checking it to ensure that event handlers are triggered.

Troubleshooting:

If the provided methods aren't working, double-check the following:

• The selector matches the correct radio button.
• The jQuery version you're using requires the appropriate syntax (attr() or prop()).
• The radio button is not disabled.

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