JavaScript/Reserved words/in

The in keyword

The in keyword is used for a shorter notation of the for loop.

Examples

The code

 var numbers = [2, 3, 5, 7, 10, 11], result = 1;  for (number in numbers) {  result += number;  console.log("result = " + result);  if (result%2 == 0) {  continue;  }  if (result > 20) {  break;  }  } 

returns the following:

result = 3 result = 6 result = 11 result = 18 result = 28 result = 39

See also

• break
• continue
• continue