jQuery - Trouble passing a variable into input:radio[name]

I'm havin开发者_如何转开发g trouble passing a variable in the following

var whichRbClicked = $('input:radio[name=RBname]:checked').val();

where RBname is the variable.

Any help or advise would be MUCH appreciated. TIA

Should be:

var whichRbClicked = $('input:radio[name=' + RBname + ']:checked').val();

For more info, check out:

• Concatenating strings with the + operator