Math.round Examples

The general syntax for this method is:

   Math.round(number)

This method returns number rounded to the nearest integer value.

Numerical strings can also be evaluated, but should be avoided as a best practice.

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   console.log(Math.round(1.33));
   console.log(Math.round(-28.7));
   console.log(Math.round(8.5));
   console.log(Math.round("101.45"));

   1
   -29
   9
   101

Math.round also works on arrays, but must be combined with the map array method. The syntax for this is:

   arrayName.map(Math.round)

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   let numbers = [1.33, 4, 8.5, -15.523, 8.49];

   console.log(numbers.map(Math.round));

   [ 1, 4, 9, -16, 8 ]