jQuery Operation Check Box of CheckBox Value Assignment Implementation Code

1. Get a single checkbox check (written in three ways):

$("input:checkbox:checked").val() 

Or

$("input:[type='checkbox']:checked").val(); 

Or

$("input:[name='ck']:checked").val(); 

2. Get multiple checkbox selections:

$('input:checkbox').each(function() { 
  if ($(this).attr('checked') ==true) { 
    alert($(this).val()); 
  } 
}); 

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 to the selected value:

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

Or

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

5. Set any 1 checkbox to the selected value based on 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 checkbox:

Select both checkbox 1 and 2:

$("input:[type='checkbox']:checked").val(); 

0

7. Set checkbox to the selected value based on the Value value:

$("input:[type='checkbox']:checked").val(); 

1

8. Delete checkbox for Value=1:

$("input:[type='checkbox']:checked").val(); 

2

9. Which checkbox to delete:

$("input:checkbox").eq( Index value ).remove(); Index value =0,1,2.... 
 If you delete the 3 A checkbox: 
$("input:checkbox").eq(2).remove();

10. Traverse checkbox:

$("input:[type='checkbox']:checked").val(); 

4

11. Select All

$("input:[type='checkbox']:checked").val(); 

5

12. Deselect All:

$("input:[type='checkbox']:checked").val(); 

6