how to use switch case in javascript

1switch(expression) {
2  case x:
3    // code block
4    break;
5  case y:
6    // code block
7    break;
8  default:
9    // code block
10}

1//javascript multiple case switch statement
2var color = "yellow";
3var darkOrLight="";
4switch(color) {
5    case "yellow":case "pink":case "orange":
6        darkOrLight = "Light";
7        break;
8    case "blue":case "purple":case "brown":
9        darkOrLight = "Dark";
10        break;
11    default:
12        darkOrLight = "Unknown";
13}
14
15//darkOrLight="Light"

1var myvalue='val1';//or other values; val2 val3 valx
2switch(myvalue) {
3  case 'val1':
4      	console.log('var myvalue is '+ myvalue);
5    	//other code ...
6    break;
7  case 'val2':
8    	console.log('var myvalue is '+ myvalue);
9    	//other code ...
10    break;
11  default:
12    	// when all the other values not covered with cases above
13    	// other code ...
14}

1switch (expr) {
2  case 'Oranges':
3    console.log('Oranges are $0.59 a pound.');
4    break;
5  case 'Apples':
6    console.log('Apples are $0.32 a pound.');
7    break;
8  case 'Bananas':
9    console.log('Bananas are $0.48 a pound.');
10    break;
11  case 'Cherries':
12    console.log('Cherries are $3.00 a pound.');
13    break;
14  case 'Mangoes':
15  case 'Papayas':
16    console.log('Mangoes and papayas are $2.79 a pound.');
17    break;
18  default:
19    console.log('Sorry, we are out of ' + expr + '.');
20}
21
22console.log("Is there anything else you'd like?");
23

1function caseInSwitch(val) {
2  var answer = "";
3  // Only change code below this line
4switch(val) {
5  case 1:
6    answer = "alpha";
7    console.log(answer);
8    break;
9  case 2:
10    answer = "beta";
11    break;
12  case 3:
13    answer = "gamma";
14    break;
15  case 4:
16    answer = "delta";
17    break;
18}
19
20
21  // Only change code above this line
22  return answer;
23}
24
25caseInSwitch(1);
26

1switch (expression) {
2  case value1:
3    //Statements executed when the
4    //result of expression matches value1
5    [break;]
6  case value2:
7    //Statements executed when the
8    //result of expression matches value2
9    [break;]
10  ...
11  case valueN:
12    //Statements executed when the
13    //result of expression matches valueN
14    [break;]
15  [default:
16    //Statements executed when none of
17    //the values match the value of the expression
18    [break;]]
19}