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JavaScript | typedArray.reduceRight() with Examples

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  • Last Updated : 31 Jul, 2018
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The typedArray.reduceRight() is an inbuilt function in JavaScript which is used to reduce each element of the typedArray from right to left into a single value.


Parameters: It accept a parameter callback function which accept some parameters specified below-

  • previousValue: It is the previously returned value.
  • currentValue: It is the current element being processed in the typedArray.

Return value: It returns the result of the reduceRight() function.

JavaScript code to show the working of this function:

Code #1:

  // Creating some typedArray
  const A = new Uint8Array([ 1, 2, 3, 4]);
  const B = new Uint8Array([5, 6, 7]);
  const C = new Uint8Array([1, 3, 5]);
  const D = new Uint8Array([2, 4, 6, 8]);
  // Calling sum() function 
  function sum(previousValue, currentValue) {
  return previousValue + currentValue;
  // Printing reduced value of the given typedArray
  document.write(A.reduceRight(sum) +"<br>");
  document.write(B.reduceRight(sum) +"<br>");
  document.write(C.reduceRight(sum) +"<br>");


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