Coffeescript ‘this’ inside jQuery .each()

jQuery.each passes the current element as second parameter of the callback, so you don’t have to reserve this for jQuery:

processRows: ->
    $("#my-table>tr").each (index, element) =>
        id = $(element).attr("id")
        @processRow id

Notice the use of the fat arrow (=>) syntax for the callback function; it binds the function’s context to the current value of this. (this in the callback function is always the same this as the one at the time you defined the function.)