Skip to content
Related Articles

Related Articles

Improve Article

JavaScript | typedArray.find() with Example

  • Last Updated : 14 Feb, 2019
Geek Week

The typedArray.find() is an inbuilt function in JavaScript which is used to return a value in the typedArray, if the value satisfies condition given in the function, otherwise, it returns undefined.

Syntax:

typedArray.find(callback)

Parameters: It takes the parameter “callback” function which checks each element of the typedArray satisfied by the condition provided. The Callback function takes three parameters that are specified below-

  • element: It is the value of the element.
  • index: It is the index of the element.
  • array: It is the array which are being traversed.

    Return value: It returns a value of the array if the elements satisfy the condition provided by the function, otherwise, it returns undefined.

    JavaScript code to show the working of this function:




    <script>
      
       // Calling isNegative function to check
       // elements of the typedArray
       function isNegative(element, index, array)
       {
        return element < 0;
       }
      
       // Created some typedArrays.
       const A = new Int8Array([ -10, 20, -30, 40, -50 ]);
       const B = new Int8Array([ 10, 20, -30, 40, -50 ]);
       const C = new Int8Array([ -10, 20, -30, 40, 50 ]);
       const D = new Int8Array([ 10, 20, 30, 40, 50 ]);
      
       // Calling find() function to check condition
       // provided by its parameter
       const a = A.find(isNegative);
       const b = B.find(isNegative);
       const c = C.find(isNegative);
       const d = D.find(isNegative);
      
       // Printing the finded typedArray
       document.write(a +"<br>");
       document.write(b +"<br>");
       document.write(c +"<br>");
       document.write(d);
      
    </script>

    Output:

    -10
    -30
    -10
    undefined

    Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof. But before you tackle the big projects, we suggest you start by learning the basics. Kickstart your web development journey by learning JS concepts with our JavaScript Course. Now at it’s lowest price ever!

    My Personal Notes arrow_drop_up
  • Recommended Articles
    Page :