How to capture focus for either an input OR a textarea

Question

I would like to detect when an input or textarea has recieved focus. For input I have:

$('body').on('focus','input', function(){

How would I add textarea to this? Tried

$('body').on('focus',['input','textarea'], function(){

but no dice

Answer 1

It should be:

$('body').on('focus', 'input, textarea', function () { ... });

• .on()
• Multiple selectors (jQuery)