Question

I want to replace <a href="123" .......>text</a> with <video src="123"..... />
How can i do this with jquery/javascript?

Answer 1

Or I assume you want to replace the a tags after clicking?
NOTE: I replace the ‘video’ tag with div, just for making it easier for you to see the change.

$(document).ready(function(){
    $('.toVideo').live('click', function(e){
        $(this).replaceWith('<div src="' + $(this).attr('href') + '">new video</div>');
        e.preventDefault();  
    })
})

Here is the example:
http://jsfiddle.net/a9xHS/5/

Or if you want to replace all tags, maybe you can:

$(document).ready(function(){
    $('.toVideo').each(function(){
        $(this).replaceWith('<div src="' + $(this).attr('href') + '">' + $(this).attr('href') + '</div>');
    })
})

http://jsfiddle.net/A9R3L/1/