Make a checkbox checked when a radio button is clicked

checkbox, javascript, jquery, radio-button

Solution

HTML CODE:

Radio1 :<input type="radio" id="radio1" name="radio"/><br>
Radio2 :<input type="radio" id="radio2" name="radio"/><br>
Radio3 :<input type="radio" id="radio3" name="radio"/><br>
Radio4 :<input type="radio" id="radio4" name="radio"/><br>
Checkbox :<input type="checkbox" id="checkbox1"/>

jQuery CODE:

 jQuery('#radio1 , #radio3').click(function(){      
jQuery('#checkbox1').attr('checked', true);   
 });        
jQuery('#radio2 , #radio4').click(function(){      
 jQuery('#checkbox1').attr('checked', false);  
 });

Live DEMO:

http://jsfiddle.net/hQbpZ/

Problem

I have this set of radio buttons, let's say ``` radio 1 radio 2 radio 3 radio 4 ``` and a checkbox; ``` checkbox 1 ``` What I wanted to achieve is when I click either radio 1 or radio 3 the checkbox 1 will be checked. If the checkbox is checked and when you click either radio 2 or radio 4, the checkbox will be unchecked. I already implemented some code for it, but it has this glitch that when I click radio 1 it'll check the checkbox, but when I click radio 3 it'll uncheck the checkbox. Well supposedly, when I click radio 1 it'll check and even if I'll click radio 3, it shouldn't uncheck the checkbox. here's my code: ``` jQuery('#radio1 input:radio, #radio3 input:radio').click(function(){ var checkbox = jQuery('#checkbox1'); checkbox.attr('checked', !checkbox.attr('checked')); }); ```

Original source