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• Return in switch statements

  @vprunet started

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  @Gordon replied
• Return in switch statements

  in JavaScript • 7 years, 7 months

  

  Return within switch statements are handled like a break (and do not return anything).
  See the following example, with execution trace on Espruino and on node.js .

  function foo( arg ) {
      switch (arg) {
      case 'bar': console.log( 'is bar' ); return( 'bar' );
      case 'gee': console.log( 'is gee' ); break;
      default: console.log( 'is default' ); return( 'default' );
      };
      return( 'end' );
  }
  
  console.log( '<--', foo( 'bar' ));
  console.log( '<--', foo( 'gee' ));
  console.log( '<--', foo( 'foo' ));
  
  

  on espruino, shows as

  is bar
  <-- end
  is gee
  <-- end
  is default
  <-- end
  

  on node.js, shows as

  is bar
  <-- bar
  is gee
  <-- end
  is default
  <-- default