C S Psyco

To start a new node project, type  C:\Users\jinoy\OneDrive\Desktop\MERN>npm init -y      The basic syntax of calling a function in node.js with express is : const   functionname  = ()  =>  { console . log ( "hello world" ); } functionname (); To call a function after every 5 seconds : setInterval (()  =>  {      console . log ( "hello" ); }, 5000  ); To call a function only once after 4 second : setTimeout (() => { console . log ( "test" ); }, 4000 ); To run a script.js file on terminal, type : C:\Users\jinoy\OneDrive\Desktop\MERN>node script.js  OR C:\Users\jinoy\OneDrive\Desktop\MERN>node script To stop a function that is executing on every interval( time to call function again) : const   interval  =  setInterval (()  =>  {      console . log ( "hello" ); }, 1000  ); setTimeout (() => {      clearInterva...