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Square root JavaScript without math | Example code

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You have to use math calculation logic to get Square root JavaScript without math. Take xi (x) and the new value of xi + 1 (x1) and check if the values are equal. Then end the series and return that value.

For starting, you need an appropriate value like half of the given value.

function sqrt(a) {
    var x,
        x1 = a / 2;
        
    do {
        x = x1;
        x1 = (x + (a / x)) / 2;
    } while (x !== x1);
    return x;
}

Source: stackoverflow.com

Example Square root JavaScript without math

Simple example code using while loop to get Square root.

<!DOCTYPE html>
<html>
<head>

  <script>
    function sqrt(a) {
      var x,
      x1 = a / 2;

      do {
        x = x1;
        x1 = (x + (a / x)) / 2;
      } while (x !== x1);
      return x;
    }

    console.log(sqrt (2)); 
    console.log(sqrt (9)); 
    console.log(sqrt (25)); 

  </script>

</head>
</html>

Output:

Square root JavaScript without math

Do comment if you have any doubts or suggestions on this JS square root topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version

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