checking if checkbox is checked or not using variable in javascript

Question

I have a variable where I have stored my checkbox id's but while I am trying to check if the checkbox is selected or not, it's not working fine.

   <script>
   function check(){
       var id = "checkbox1.0";
       if($('#' + id).is(':checked')){alert("checked");} 
   }
   </script>
   <body>
    <input type ="checkbox" id = "checkbox1.0">
    <input type ="checkbox" id = "checkbox2.0" onclick="check()">
   </body>

I don't think those are valid IDs. And `$('#checkbox1.0')` definitely won't do what you think. — sevenseacat, Mar 13 '14 at 05:35
possible duplicate of [Check checkbox checked property using jQuery](http://stackoverflow.com/questions/901712/check-checkbox-checked-property-using-jquery) — Katie Kilian, Mar 13 '14 at 05:37
Basically I want to store my ID's in a variable and then check it, is there any way out — alok verma, Mar 13 '14 at 05:37
@alokverma Don't use reserved keywords/symbols like the period `.` in your control's ID. — JW Lim, Mar 13 '14 at 05:40

score 8 · Accepted Answer · answered Mar 13 '14 at 05:39

8

You have to escape the . in your id, but you'd better avoid such ids.

   var id = "checkbox1\\.0";

The demo.

answered Mar 13 '14 at 05:39

xdazz

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checking if checkbox is checked or not using variable in javascript

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