switch statement !case js code example

Example 1: js switch case

switch(expression) {
  case x:
    // code block
    break;
  case y:
    // code block
    break;
  default:
    // code block
}

Example 2: switch case in javascript

function whatToDrink(time){
    var drink ;
          switch (time) {
            case "morning":
              drink = "Tea";
              break;
            case "evening":
              drink = "Shake";
              break;
            default:
              drink="Water";   
          }
  	return drink;
}
console.log(whatToDrink("morning")) //Tea
console.log(whatToDrink("evening")) //Shake
console.log(whatToDrink("night"))   //Water
console.log(whatToDrink("daytime")) //Water

Example 3: switch statement javascript

function caseInSwitch(val) {
  var answer = "";
  // Only change code below this line
switch(val) {
  case 1:
    answer = "alpha";
    console.log(answer);
    break;
  case 2:
    answer = "beta";
    break;
  case 3:
    answer = "gamma";
    break;
  case 4:
    answer = "delta";
    break;
}


  // Only change code above this line
  return answer;
}

caseInSwitch(1);

Example 4: js convert if/else statement to switch case

var gradeOut = 70;
var totalGrade = 80;

if (gradeOut >= 90)
    gradeOut+= "My letter grade is: A";
  else if (totalGrade < 90 && totalGrade >= 80)
    gradeOut+= "My letter grade is: B";
  else if (totalGrade < 80 && totalGrade >= 70)
    gradeOut+= "My letter grade is: C";
  else if (totalGrade < 70 && totalGrade >= 60)
    gradeOut+= "My letter grade is: D";
  else if (totalGrade < 60)
    gradeOut+= "My letter grade is: F";

//here's the same thing using switch(true). Requires var gradeOut (is currently at top of page
switch(true) {
case gradeOut<60:
    gradeOut= "My letter grade is: F";
    break;
case gradeOut<70:
    gradeOut= "My letter grade is: D";
    break;
case gradeOut<80:
    gradeOut="My letter grade is: C";
    break;
}

Example 5: switch javascript

switch (expressão) {
  case valor1:
    //Instruções executadas quando o resultado da expressão for igual á valor1
    [break;]
  case valor2:
    //Instruções executadas quando o resultado da expressão for igual á valor2
    [break;]
  ...
  case valueN:
    //Instruções executadas quando o resultado da expressão for igual á valorN
    [break;]
  default:
    //Instruções executadas quando o valor da expressão é diferente de todos os cases
    [break;]
}

Example 6: javascript switch

var color = "yellow";
var darkOrLight="";
switch(color) {
    case "yellow":case "pink":case "orange":
        darkOrLight = "Light";
        break;
    case "blue":case "purple":case "brown":
        darkOrLight = "Dark";
        break;
    default:
        darkOrLight = "Unknown";
}