Summary of 12 tips for operating checkboxes in jquery_jquery

1. Get a single checkbox selected item (three writing methods)
$("input:checkbox:checked").val()
or
$("input: [type='checkbox']:checked").val();
or
$("input:[name='ck']:checked").val();

2. Get multiple checkbox selected items
$('input:checkbox').each(function() {
                                                                                 ) ==true) {
                                                                                                   

3. Set the first checkbox to the selected value

$('input:checkbox:first').attr("checked",'checked'); or
$('input:checkbox').eq(0).attr("checked",'true');

4. Set the last checkbox as the selected value

$('input:radio:last').attr('checked', 'checked'); or
$('input:radio:last').attr('checked', 'true');

5. Set any checkbox as the selected value according to the index value

$('input:checkbox).eq(index value).attr('checked', 'true'); index Value=0,1,2....or
$('input:radio').slice(1,2).attr('checked', 'true');

6. Select multiple checkboxes and select the 1st and 2nd checkboxes at the same time

$('input:radio').slice(0,2).attr('checked' ,'true');
7. Set the checkbox to the selected value according to the Value value

$("input:checkbox[value='1']").attr('checked','true');
8. Delete the checkbox with Value=1

$("input:checkbox[value='1']").remove();
9. Which checkbox to delete?

$("input:checkbox").eq(index value).remove(); index value=0,1,2.... To delete the third checkbox:
$("input:checkbox").eq(2).remove();

10. Traverse checkbox

$('input:checkbox').each(function (index, domEle) {//Write code
});

11. Select all

$('input:checkbox').each(function() {                                                                                                               >});

12. Unselect all

                                                                              🎜>});