Accessori, da utilizzare quasi sempre, cross browser, in espansione ...

$toclipboard.js

function copyToClipboard( element ){
  
  var $temp = $( "<input>" );
  
  $( "body" ).append( $temp );
  
  $temp.val( $( element ).text() ).select();
  
  document.execCommand( "copy" );
  
  $temp.remove();

}

tools

( function( W, D ){
  
  window.U = {
  
    /*
      
      U.getLang()
      Restituisce la lingua del browser
    
    */
    
    getLang : function(){
      
      return navigator.language || navigator.userLanguage;
      
    },
    
    /*
      
      U.sanitize( string );
      Pulisce una sctringa da caratteri speciali
    
    */
    
    sanitize : function( string ){			
        
        return string.trim().replace( /[^a-z 0-9]+/gi, "" );//.replace( / /gi, "-" );	
    
    },
    
    /*
    
      U.addEvent( evnt, elem, func )
      Appende un evento ad un elemento
    
    */
    
    addEvent : function( evnt, elem, func ){
        
        try{
            
            if( elem.addEventListener ){
                
                elem.addEventListener( evnt, func, false );
            
            }else if( elem.attachEvent ){
                
                 var r = elem.attachEvent( "on" + evnt, func );
            
            }else{
                    
                 return false;
                    
            }
            
            return true;
        
        }catch( e ){
            
            return false;
            
        }		    
        
    },
    
    /*
    
      U.getSelectedText()
      Restituisce il testo selezionato nella pagina
    
    */
    
    getSelectedText : function(){
    
	var t = "";
			
	try{
			
		if( W.getSelection ){
				
			t = W.getSelection();
				
		}else if( D.getSelection ){
				
			t = D.getSelection();
				
		}else if( D.selection ){
				
			t = D.selection.createRange().text;
				
		}	
			
	}catch( e ){}
			
	return t;
		
    },
    
    /*
    
    	U.clone( obj )
    	Clona un oggetto
    
    */
    
    clone( obj ){

        if( !obj || typeof obj != "object" )return {};

        var news = {};

        for( var key in obj ) {

            news[ key ] = obj[ key ];

        }

        return news;

    },
    
    /*
    
    	U.merge( source, news );
    	Aggiorna un oggetto ottimo per i settaggi
    
    */
    
    merge : function( source, news ){

	source 	= source || {};
	news 	= news 	|| {};	

	for( var key in source ) {
		
		if( source.hasOwnProperty( key ) && !( key in news )) {
			     
		  	news[ key ] = source[ key ];
			    
		}
			  
	}
			
	return news;
	
    },
    
    /*
    
    	U.grep( items, callback )
    	filtra un array a seconda di un criterio
    
    */
    
    grep : function( items, callback ){
        
        var filtered = [],
            len      = items.length,
            i 	= 0;
        
        for( i; i < len; i++ ){
                        
            if( callback( items[ i ] ) )filtered.push( items[ i ] );
        
        }

        return filtered;
    
    },
    /*
    
    	U.getXHR()
    	restituisce un oggetto XMLHttpRequest o null
    
    */
    getXHR : function(){
	    try {
		return new XMLHttpRequest();
	    }catch(e){}
	    try {
		return new ActiveXObject("Msxml3.XMLHTTP");
	    }catch(e){}
	    try {
		return new ActiveXObject("Msxml2.XMLHTTP.6.0");
	    }catch(e){}
	    try {
		return new ActiveXObject("Msxml2.XMLHTTP.3.0");
	    }catch(e){}
	    try {
		return new ActiveXObject("Msxml2.XMLHTTP");
	    }catch(e){}
	    try {
		return new ActiveXObject("Microsoft.XMLHTTP");
	    }catch(e){}
	    return null;
    },
    /*
    
    	U.paramsToJSON()
    	restituisce un oggetto JSON
    
    */
    paramsToJSON : function( params ){
	
	if( !params || params == "" )return {};
	
	params = "{\"" + 
         	params
         	.replace( /\?/gi, "" )
         	.replace( /\&/gi, "\",\"" )
         	.replace( /\=/gi, "\":\"" ) +
         	"\"}";
  
	return JSON.parse( params );

    },
    /*
    
    	https://regex101.com/r/aAx3u7/2
    
    */
    searchLinks : function( text ){

	return text.match( /(http?s?:?\\?\/?\\?\/[^\s,"'<>]+)/g ) || [];

    }
    
  };
  
} )( window, document );