doc/js/article.js
function(prefix, string) {
    return string.substring(0, prefix.length) == prefix ?
        string.substring(prefix.length) :
        '';
  }
function(prefix, string) {
    return string.substring(0, prefix.length) == prefix ?
        string.substring(prefix.length) :
        '';
  }
function ( prefix , string ) { return string . substring ( 0 , prefix . length ) == prefix ? string . substring ( prefix . length ) : '' ; }
Checks for a prefix, returns everything after it if it exists
Checks for a prefix returns everything after it if it exists