React Js Series for Beginners தமிழில் 42 : Higher Order Methods - filter() vs find() in Javascript

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👉 filter Method
The filter method helps you make a new list with only the items you want. It goes through each item in your list and keeps those that meet a certain rule. For example, if you have a list of numbers and only want numbers bigger than 10, you use a filter. It looks like this: let bigNumbers = array.filter(item = item 10);. This makes a new list, bigNumbers, with only the numbers greater than 10.

👉 Chaining Methods - filter
You can use filter with other methods to do more in one go. For example, you can first use filter to pick items that fit a rule and then use map to change those items. If you want to keep numbers greater than 10 and then double them, you write: let newArray = array.filter(item = item 10).map(item = item * 2);. This first keeps numbers greater than 10 and then doubles each of those numbers.

👉 find Method
The find method is used to get the first item in a list that matches a rule. It checks each item one by one and stops when it finds the first match. For example, if you have a list of numbers and want the first one that is greater than 10, you use find. It looks like this: let firstBigNumber = array.find(item = item 10);. This finds and returns the first number that is more than 10.

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🕘Timestamps:
00:17 - Example for filter method
05:42 - Chaining method - filter
07:31 - Example for find method

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