How to check a radio button with jQuery

Question

I try to check a radio button with jQuery. Here's my code:

<form>
    <div id='type'>
        <input type='radio' id='radio_1' name='type' value='1' />
        <input type='radio' id='radio_2' name='type' value='2' />
        <input type='radio' id='radio_3' name='type' value='3' /> 
    </div>
</form>

And the JavaScript:

jQuery("#radio_1").attr('checked', true);

Doesn't work:

jQuery("input[value='1']").attr('checked', true);

Doesn't work:

jQuery('input:radio[name="type"]').filter('[value="1"]').attr('checked', true);

Doesn't work:

Do you have another idea? What am I missing?

Answer 1

“jquery datepicker format” Code Answer's

1. $('#timePicker'). datetimepicker({
2. // dateFormat: 'dd-mm-yy',
3. format:'DD/MM/YYYY HH:mm:ss',
4. minDate: getFormattedDate(new Date())
5. });
6. ​
7. function getFormattedDate(date) {
8. var day = date. getDate();