JavaScript increasing variable

Question

I want to add ID to each element of class .content, and I want each ID to have integer increase by 1. Example:

Answer 1

Try this:

var number = 1;
$(".content").each(function() { 
    this.id = 'content_' + number;
    number++;
});

Note: you could just use vanilla JS to assign the attribute id (no need to use jQuery)