Javascript Switch Case

Switch Case in javascript

In javascript switch case is an alternative to multiple if else conditions. It allows us to write less code and still get the same functionality as if else condtions.

Switch case syntax

switch(choice) {
  case choice_1:
    // code block
    break;
  case choice_2:
    // code block
    break;
  default:
    // code block
}

• default: If the given cases are not matched then it will execute the default statement.
• break: We use the break statement to stop execution of switch block once the case/choice is matched. If no break statement is specified then it executes all the cases and default also.

Switch case example

Let's write a simple switch case to print the price of a fruit

const expr = 'Papayas';
switch (expr) {
  case 'Oranges':
    console.log('Oranges are $0.59 a pound.');
    break;
  case 'Mangoes':
  case 'Papayas':
    console.log('Mangoes and papayas are $2.79 a pound.');
    // expected output: "Mangoes and papayas are $2.79 a pound."
    break;
  default:
    console.log(`Sorry, we are out of ${expr}.`);
}