JavaScript Array some() function

Javascript Web Development Front End Technology Object Oriented Programming

The some() method of JavaScript is used to check if any of the elements in an array fulfills the condition.

The syntax is as follows −

array.some(function(currentVal, index, arr), val)

Above, the parameters under function(), include currentVal – value of the current element, index – array index, whereas val the array object the current element fits

Let us now implement the some() method in JavaScript −

Example

Live Demo

<!DOCTYPE html>
<html>
<body>
   <h2>Ranking Points</h2>
   <p>Is any point above 400...</p>
   <button onclick="display()">Result</button>
   <p id="demo"></p>
   <script>
      var pointsArr = [50, 100, 200, 300, 400, 500, 600];
      function pointsFunc(points) {
         return points > 400;
      }
      function display() {
         document.getElementById("demo").innerHTML = pointsArr.some(pointsFunc);
      }
   </script>
</body></html>

Output

Click the “Result” button −

Example

Live Demo

<!DOCTYPE html>
<html>
<body>
   <h2>Ranking Points</h2>
   <p>Is any point equal to 550...</p>
   <button onclick="display()">Result</button>
   <p id="demo"></p>
   <script>
      var pointsArr = [10, 20, 30, 40, 50, 60, 70, 80, 90, 1000];
      function pointsFunc(points) {
         return points == 550;
      }
      function display() {
         document.getElementById("demo").innerHTML = pointsArr.some(pointsFunc);
      }
   </script>
</body></html>