jquery get number from id

Question

how can i get the number from a div tag\'s id?

example:

how can i get the 1 and store it in

Answer 1

// replace all non-digits with nothing
alert($('div').attr("id").replace(/\D/g,''));

If you like, you can just grab the numbers at the end:

// 

alert($('div').attr("id").match(/\d+$/));
// alerts "555"