React Js Series for Beginners தமிழில் 39 : Array Methods - sort, reverse, includes, join & toString

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The sort() method arranges the items in an array in order. By default, it sorts items alphabetically if they are strings or numerically if they are numbers. For example, if you have let numbers = [3, 1, 4, 2]; and you use numbers.sort();, it will become [1, 2, 3, 4]. If you sort strings like ['banana', 'apple', 'cherry'], they will be arranged in alphabetical order. This method helps organize your data.

When you use sort(), JavaScript looks at the ASCII values of characters to decide their order. ASCII is a table that assigns numbers to letters and symbols. For instance, 'A' has a lower ASCII value than 'a', so 'A' comes before 'a' when sorted. This affects how string sorting works, so you might get different results for uppercase and lowercase letters.

The reverse() method flips the order of the items in an array. The first item becomes the last, and the last item becomes the first. For example, if you have let numbers = [1, 2, 3]; and use numbers.reverse();, it will change to [3, 2, 1]. This method is useful when you want to reverse the order of your items.

The includes() method checks if a specific item is in an array. It returns true if the item is found, and false if it is not. For example, if you have let fruits = ['apple', 'banana', 'cherry']; and use fruits.includes('banana');, it will return true because 'banana' is in the array. If you check for an item not in the array, like fruits.includes('orange');, it will return false.

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🕘Timestamps:
00:11 - Overview
00:42 - sort() method
02:30 - ASCII Table for Sort methods
06:45 - reverse() method
07:20 - includes() method
08:25 - join() method
10:38 - toString() method

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