jquery if else if

if (hour < 18) {

    greeting = "Good day";

 }
else {

    greeting = "Good evening";

 }
 

if (time < 10) {

    greeting = "Good morning";

 }
else if (time < 20) {

    greeting = "Good day";

 }
else {

    greeting = "Good evening";

 }
 

if (condition) {

  //  block of code to be executed if the condition is true

 }