/**
* basic usage of callbacks
*/
/* MAIN FUNCTION */
function addnum(x, cb) {
console.log('x=' + x);
cb(x);
}
/* CALLBACKS */
//callback which adds 5
function cb5(a) {
var rez = a + 5;
console.log('a+5=' + rez);
}
//callback which adds 100
function cb100(a) {
var rez = a + 100;
console.log('a+100=' + rez);
}
//execute main function with callback cb5
addnum(2, cb5);
console.log();
//execute main function with callback cb100
addnum(2, cb100);
/* $node 01callback
x=2
a+5=7
x=2
a+100=102
*/
x=2 a+5=7 x=2 a+100=102
$ps -aux | grep node (list all node processes) sasa 890 0.5 0.5 11797020 84452 ? Ssl 2024 1533:37 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js sasa 903 0.7 0.5 1331320 84468 ? Ssl 2024 2174:24 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js sasa 929 0.3 0.4 1302328 70752 ? Ssl 2024 1025:51 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js sasa 943 0.3 0.4 1303368 69588 ? Ssl 2024 1004:10 node /home/sasa/dex8/dex8-kiosk/server/index.js sasa 980 0.5 0.5 11803104 92048 ? Ssl 2024 1650:08 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js sasa 981 0.5 0.6 1153712 108768 ? Ssl 2024 1704:17 node /home/sasa/voovuu/voovuu-api/starter.js sasa 1039 0.8 1.8 12070488 302624 ? Ssl 2024 2509:39 node /home/sasa/voovuu/voovuu-pub/server/index.js www-data 1252272 0.0 0.0 2608 600 ? S 00:12 0:00 sh -c ps -aux | grep node www-data 1252274 0.0 0.0 3304 720 ? S 00:12 0:00 grep node sasa 1788108 0.4 0.5 11804596 90236 ? Ssl Mar16 235:42 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index. sasa 1790865 0.7 0.6 11823176 102192 ? Ssl Jan30 870:30 node /home/sasa/dex8/dex8-www/server/index.js sasa 1791369 0.7 0.8 11789608 139232 ? Ssl Jan30 871:53 node /home/sasa/dex8/dex8-api/starter.js sasa 2044488 0.3 0.4 1300372 70264 ? Ssl 2024 872:41 node /home/sasa/dex8/dex8-panel/server/index.js sasa 2574087 0.3 0.4 11795224 79392 ? Ssl 2024 957:20 node /home/sasa/@mikosoft/dodo-examples/server/index.js sasa 3598766 0.3 0.4 1100892 65628 ? Ssl 2024 590:05 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598767 0.3 0.4 22280304 81144 ? Ssl 2024 600:16 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598774 0.3 0.4 1100896 66276 ? Ssl 2024 592:24 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598775 0.3 0.4 1101408 66084 ? Ssl 2024 593:51 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598802 0.6 1.0 22350028 178808 ? Rsl 2024 1084:32 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598803 0.3 0.4 1100640 66252 ? Ssl 2024 590:24 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598851 0.3 0.4 1102180 67524 ? Ssl 2024 590:48 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598853 0.3 0.4 1101412 66508 ? Ssl 2024 590:32 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598925 0.3 0.5 1329408 82760 ? Ssl 2024 614:55 node /home/sasa/dex8/dex8-worker/starter.js sasa 3598927 0.3 0.3 1296140 65504 ? Ssl 2024 591:25 node /home/sasa/dex8/dex8-worker/starter.js