..:: Source code - 03fun_parameter_callback3.js ::..

/**
 * callback as function parameter
 */

//define function with callback
function fja(p1, cb) {
	
	res = p1 +10;
	cb(p1);
}


//define parameters
var x=2;

//callback as an object
var obj = {
	cb1: function(a) {
		console.log('cb1: '+a);
	},
	cb2: function(a) {
		console.log('cb2: '+a);
	}

}




//call function
var res = fja(x, obj.cb1); //2

..:: NodeJS Console - 03fun_parameter_callback3.js ::..

cb1: 2

$ps -aux | grep node (list all node processes)
sasa         914  0.4  0.5 1306308 83936 ?       Ssl  Aug04 120:23 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa         935  0.6  0.7 11786816 128912 ?     Ssl  Aug04 180:07 node /home/sasa/dex8/dex8-api/starter.js
sasa         938  0.3  0.4 1304976 74204 ?       Ssl  Aug04  95:34 node /home/sasa/regoch/regoch-www/server
sasa         945  0.3  0.4 1299400 65972 ?       Ssl  Aug04  87:17 node /home/sasa/dex8/dex8-panel/server/index.js
sasa         947  0.6  0.6 11825172 104200 ?     Ssl  Aug04 189:00 node /home/sasa/dex8/dex8-www/server/index.js
sasa         966  0.4  0.5 11809232 97424 ?      Ssl  Aug04 130:12 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa         980  0.6  0.5 1329944 82844 ?       Ssl  Aug04 166:51 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa         997  0.3  0.4 1300684 68284 ?       Ssl  Aug04  88:21 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1021  0.3  0.3 1297656 64732 ?       Ssl  Aug04  87:03 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1065  0.5  0.6 11825504 101052 ?     Ssl  Aug04 141:07 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1074  0.5  0.6 1147628 102608 ?      Ssl  Aug04 142:37 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1136  0.6  0.9 11863412 159708 ?     Ssl  Aug04 171:55 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1148  0.3  0.4 11794388 77892 ?      Ssl  Aug04  94:34 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1197  0.3  0.3 1099116 62744 ?       Ssl  Aug04  89:55 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1199  0.3  0.3 1099872 64292 ?       Ssl  Aug04  89:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1308  0.3  0.3 1099616 64372 ?       Ssl  Aug04  89:48 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1325  0.3  0.3 1099360 63488 ?       Ssl  Aug04  89:45 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1393  0.6  0.7 22314068 130228 ?     Ssl  Aug04 183:47 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1395  0.3  0.3 1099884 63584 ?       Ssl  Aug04  90:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1489  0.3  0.3 1099360 63680 ?       Ssl  Aug04  90:05 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1496  0.3  0.4 1100128 65700 ?       Ssl  Aug04  89:30 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.3  0.3 1099104 63448 ?       Ssl  Aug04  89:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1608  0.3  0.3 1099616 63480 ?       Ssl  Aug04  89:13 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1686  0.5  0.6 11812464 110464 ?     Ssl  Aug04 142:42 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1371685  0.3  0.4 11795988 81868 ?      Ssl  Aug16  35:13 node /home/sasa/mikosoft-info/solar-wind-energy/server/index.js
sasa     1460918  0.3  0.3 1298600 63684 ?       Ssl  Aug17  31:13 node /home/sasa/sites-nodejs/oxygen-free-copper/server.js
www-data 2138070  0.0  0.0   2608   592 ?        S    16:59   0:00 sh -c ps -aux | grep node
www-data 2138072  0.0  0.0   3304   708 ?        S    16:59   0:00 grep node