Check radio button whose value = $ programmatically

Question

There is a radio button group define as below:

<input type="radio" name="type0" value="$">$<input type="radio" name="type0" value="%">%

Need to check the first radio button whose value = $.

The problem is the below code doesn't accomplish this. Need some way of escaping $

$('input[type=radio][value=$]').attr('checked','checked');

Answer 1

$('input[type=radio][value="$"]').first().attr('checked','checked');

Answer 2

this works for me, enclose the selector in double quotes and the attribute selector in single ones

$("input[type=radio][value='$']").attr('checked','checked');

http://jsfiddle.net/BuvKT/