javascript switch assignment

//javascript multiple case switch statement
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";
}

//darkOrLight="Light"var myvalue='val1';//or other values; val2 val3 valx
switch(myvalue) {
  case 'val1':
      	console.log('var myvalue is '+ myvalue);
    	//other code ...
    break;
  case 'val2':
    	console.log('var myvalue is '+ myvalue);
    	//other code ...
    break;
  default:
    	// when all the other values not covered with cases above
    	// other code ...
}switch (expression) {
  case value1:
    //Statements executed when the
    //result of expression matches value1
    [break;]
  case value2:
    //Statements executed when the
    //result of expression matches value2
    [break;]
  ...
  case valueN:
    //Statements executed when the
    //result of expression matches valueN
    [break;]
  [default:
    //Statements executed when none of
    //the values match the value of the expression
    [break;]]
}var price = (function(color) {
  switch(color) {
    case 'red':
      return 10;
    case 'blue':
      return 20;
    default:
      return 30;
  }
})('blue');

console.log(price); // Will print 20