title: How to choose a substring after given character
body: <p>I would like to save a substring to a javascript variable using regex unless there is a different/easier way.
  For example i have a link like this: 
  <a href="http://www.youtube.com/watch?v=sEHN4t29oXY&amp;feature=related">http://www.youtube.com/watch?v=sEHN4t29oXY&amp;feature=related</a></p>
  
  <p>I want to only get sEHN4t29oXY&amp;feature=related so i guess i would have to check for the first equal sign to appear and after that save the rest of that string into the variable.. please help, thanks </p>