How do I select an element in jQuery by using a variable for the ID?

Question

For example, the following selects a division with id=\"2\":

row = $(\"body\").find(\"#2\");

How do I do something like this:

r         


        

Answer 1

Doing $('body').find(); is not necessary when looking up by ID; there is no performance gain.

Please also note that having an ID that starts with a number is not valid HTML:

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").