Question

I know how to find all the links but I do not know how to programmatically inject html after a tag. I think the html should end up like this:

<a href="http:www.google.com> this is a useful website</a> <input type="checkbox" name="option" >

Answer 1

You can do this simply in JQuery, using after:

$("a").after("<input type='checkbox' name='option' />");

Edit

Inspired by RobG’s comment — to apply to only specific links, change the selector:

// select all a-tags that link to Google
$("a[href='http://www.google.com']")

Or use a wildcard of some kind:

// select all a-tags that contain any href tags (ie, exclude anchor tags)
$("a[href]")