Is this a Valid ID?

Question

I have this code and I would like to know how to set id values to <h4> and know if the id is valid.

 container.insert({ bottom: '<h4 style="margin:8px 0px 4px 0px; padding-left:0px ; select id=comment_'+ l +'">' + l + '</h4>' });

I need this so I can hide/show this <h4> depending on the value of a combo box.

Or is there an easier way to do this?

Answer 1

Your attributes on the H4 appear to be malformed explaining why you cant navigate the to the h4 by an id selector

<h4 style="margin:8px 0px 4px 0px; padding-left:0px ; select id=comment_'+ l +'">

Should be

<h4 style="margin:8px 0px 4px 0px; padding-left:0px;" id="comment_'+ l +'">

Answer 2

You can give an id attribute to any elements you like, even script/link/head and other tags.

Answer 3

You can add an ID to any element you like. As for its validity:

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 (".").