Need a javascript the cheks the checkbox if it 'checked'
1910
Javascript to check whether a checkbox is being checked or unchecked
84606
Assign an initial value to radio button as checked
106886
Get $_POST from multiple checkboxes
59765
Conditionally make inputs required depending on checkbox value
67759
Jquery toggle event is messing with checkbox value
123093
getting multiple checkboxes names/id's with php
43643
Disable other checkboxes if two of them are selected using jquery
114788
Submit an HTML form with empty checkboxes
124098
Is there an onSelect event or equivalent for HTML ?
115316
How to check whether a Button is clicked by using JavaScript
148273
Check if event exists on element
131454
CSS :selected pseudo class similar to :checked, but for  elements
57966
how to mark checkbox true for particular record
22473
nested checkbox behavior check/uncheck
35275
submitting a form when a checkbox is checked
146642
Using an if statement to check if a div is empty
136509
Print message only if checkbox field is alter using form alter