CODEWITHSUNDEEP
javascriptswitch-statement
Tiberto
Tiberto

Reputation: 11

switch statement with several values

I am wondering if there is a way to evaluate several values in the switch expression. For example, I want to apply a case only if there is a match for X and Y. Here is my code: 

switch (x,y) {
  case x >= 0 && x < 150 && y == 150:
    topLeftRight();
  break;
  case x == 150 && y <= 150 && y > 0:
    topRightDown();
  break;
  case y === 0 && x > 0 && x <= 150:
    bottomRightLeft();
  break;
  case x === 0 && y <= 150 && y >= 0:
    bottomLeftUp();
  break;
}

Do you know if this is possible with switch? Thanks in advance :)

Upvotes: 1

Views: 60

Answers (2)

backcab
backcab

Reputation: 668

you need an if statement

if(x >= 0 && x < 150 && y == 150)
  topLeftRight();
else if(x == 150 && y <= 150 && y > 0)
  topRightDown();
else if(y === 0 && x > 0 && x <= 150)
  bottomRightLeft();
else if(x === 0 && y <= 150 && y >= 0)
  bottomLeftUp();

Case statements are good for checking if a single variable is equal to a list of multiple things. For example:

switch(vehicle.type){
  case Boat:
    print("This is a boat")
    break;
  case Car:
    print("This is a car")
    break;
  case default:
    print("This is not a boat or a car")
    break;
}

When evaluating conditionals, it is best to use an if/else if/else statement

Upvotes: 2

Nina Scholz
Nina Scholz

Reputation: 386680

You could take true as expression to check against the cases. switch statement uses strict comparison === of expression part and case parts.

switch (true) {
  case x >= 0 && x < 150 && y == 150:
    topLeftRight();
    break;
  case x == 150 && y <= 150 && y > 0:
    topRightDown();
    break;
  case y === 0 && x > 0 && x <= 150:
    bottomRightLeft();
    break;
  case x === 0 && y <= 150 && y >= 0:
    bottomLeftUp();
    break;
}

Upvotes: 2

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