A simple bookmarklet to (re)load a script on a web page.

re_load_bookmarklet.js

( function( $, id, src )
{
    var $body   = $( document.body ),
        $script = $( '<script src="' + src + '?_UNIQUE_" id="' + id + '"></script>' ),
        $prev   = $( '#' + id );
        
    if( $prev.length > 0 )
    {
        $prev.remove();
    }
    
    $script.attr( 'src', $script.attr( 'src' ).replace( '_UNIQUE_', +new Date() ) );
    
    $body.append( $script );
    
} )( jQuery, 'script-id', 'http://script/location.js' );