React Js Series for Beginners தமிழில் 44 : Higher Order Methods - reduce() method in Javascript

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👉 To find the sum of all the numbers in an array using a for loop, you would go through each number one by one, add them up, and store the total in a variable. For example, if you have an array [1, 2, 3, 4], you can write let sum = 0; for (let i = 0; i numbers.length; i++) { sum += numbers[i]; }. This code starts with sum = 0, then adds 1, 2, 3, and 4 to it, ending up with a total sum of 10.

👉 The reduce method in JavaScript is useful when you want to combine all the elements in an array into a single value. It’s a powerful tool that simplifies the process of adding, multiplying, or otherwise combining items in a list. Instead of writing a loop to go through each element and keep track of a total, reduce does all the work for you in a cleaner, more efficient way.

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🕘Timestamps:
00:10 - why reduce method?
00:46 - Sum of Array Elements using for loop
04:10 - Reduce method example
06:35 - Process of each iteration in reduce method
08:13 - Example 2 - Adding salary

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