Another way to concatenate

Question

Is there another a way to concatenate a '#' character like I'm doing below?

radioButtonID = '#' + radioButtonID;

Answer 1

That's about as short as it could get if you are prefixing.

Answer 2

What's wrong with what you've got there? That should work.

Unless you're looking for a stringbuffer or something...

Answer 3

I suppose you could do something like this:

var radioButtonID = ['#', radioButtonID].join('');

Answer 4

Not very efficient, but this works:

radioButtonID.replace(/(.+)/,"#$1")

Answer 5

    "#".concat(radioButtonID)
or
    ["#",radioButtonID].join('')