Counts the search occurances from an array in javascript

Published on : August 03,2022

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In this article we will learn example about Counts the search occurances from an array using javascript. Let's start …

Syntax & Example: array-count-search-occurances.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>array-count-search-occurances</title>
  <link rel="stylesheet" type="text/css" href="../style.css" />
</head>
<body> 
  
  <h1>20-array-count-search-occurances!</h1>

  <h3>Create a function which counts the search occurances from an array</h3>

  <script type="text/javascript" src="script.js"></script>

</body>
</html>

Syntax & Example: script.js

console.log('20-array-count-search-occurances');

// approach 1
/* function countSearchOccurances(arrayToSearch, elementsToSearch) {
  // console.log('arrayToSearch: ', arrayToSearch);
  // console.log('elementsToSearch: ', elementsToSearch);
  let count = 0;
  for(let curElement of arrayToSearch) {
    if(curElement === elementsToSearch) {
      count++;
    }
  }
  // console.log('search count:', count);
  return count;
} */

// approach 2 
function countSearchOccurances(arrayToSearch, elementsToSearch) {

  return arrayToSearch.reduce((countAccumulator, curentSearchElement) => {
    let countOccurances = (curentSearchElement === elementsToSearch) ? 1 : 0;
    // console.log('countAccumulator', countAccumulator, 'arrayToSearch', arrayToSearch, 'elementsToSearch', elementsToSearch,);
    return countAccumulator + countOccurances;
  },0)
}

const versionArray = [1, 2, 5, 7, 2];
const versionCount = (countSearchOccurances(versionArray, 2));
console.log('versionCount: ', versionCount);

console.log('---------');

const ageArray = [21, 25, 22, 25, 30, 25, 30];
const ageCount = (countSearchOccurances(ageArray, -25));
console.log('ageCount: ', ageCount);

Hope it can help you…

Categories : JavaScript

Tags : HTML

Praful Sangani

I'm a passionate full-stack developer with expertise in PHP, Laravel, Angular, React Js, Vue, Node, Javascript, JQuery, Codeigniter, and Bootstrap. I enjoy sharing my knowledge by writing tutorials and providing tips to others in the industry. I prioritize consistency and hard work, and I always aim to improve my skills to keep up with the latest advancements. As the owner of Open Code Solution, I'm committed to providing high-quality services to help clients achieve their business goals.

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Counts the search occurances from an array in javascript

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