JavaScript Control Structures

Control statement or control structure are used to manage program execute is based on specific condition. In this section are given basic example which are control program execution dynamically. That is very important because there is possible a simple app are based on multiple test condition.

If Else Statement

That is simple and selection based statement that is depending upon given expression condition. Generally most of statements are based on condition, because condition is decide the which statements allowed to the current execution. if-statement are defined by given syntax.

if(expression){
//when expression is true
}

Nested if-else statements

if(condition){
  
  if(otherCondition){

    if(someCondition){
      //condition code
    }
  }
  if(condition){

  }
}

Switch case

switch statement are used to check multiple test condition of a particular variable value.

var data =10;
var five=5,seven=7,ten=10;

switch(data){

  case five:
    console.log("Five");
  break;
  case  seven:
    console.log("Seven");
  break;
  case ten:
    console.log("Ten");
  break;
  default:
    console.log("That is default");

}