I have this javascript code:

```
var right = document.getElementById("true").checked;
var wrong = document.getElementById("false").checked;

if (right){
    answer += 100;
}

```

I want to replace the Javascript with jQuery, so I replaced this line:

```
var right = document.getElementById("true").checked;

```

with this:

```
var right = $('#true')[0].attr('checked');  

```

I have also downloaded and added the jQuery file to my HTML:

```
<script src="jquery-1.11.2"></script>

```

However when I replaced the above JS code with jQuery it isn't working at all. What am I doing wrong ?

**EDIT:** I have also tried this,

```
function calc(){
    $(function() {
        var isTrue = $('#true').attr('checked');    
    });

    var wrong = document.getElementById("false").checked;

    if (right){
        answer += 100;
    }
}

```

But it is still not working.