JavaScript's developers must know these 6 functions:
1. shift()
β The shift() method removes the first element from an array and returns the removed element. This method changes the length of the array.
β The shift() method removes the first element from an array and returns the removed element. This method changes the length of the array.
2. unshift()
β Just like shift() methods removes the first element from an array, unshift() adds it. This method changes the length of the array and returns the new length.
β Just like shift() methods removes the first element from an array, unshift() adds it. This method changes the length of the array and returns the new length.
3. slice()
β The slice() method returns a shallow copy of a portion of an array into a new array object selected from start to end, where start and end represent the index of items in that array. The original array will not be modified.
β The slice() method returns a shallow copy of a portion of an array into a new array object selected from start to end, where start and end represent the index of items in that array. The original array will not be modified.
4. splice()
β The splice() start at index 2 (the third place, count starts from 0) of the array, and remove one item.
In our array, that would mean that βrabbitβ got removed. splice() will returns new array as result.
β The splice() start at index 2 (the third place, count starts from 0) of the array, and remove one item.
In our array, that would mean that βrabbitβ got removed. splice() will returns new array as result.
5. includes()
β includes() will check every item in the array, and check if any of them includes our condition. It will return boolean.
β includes() will check every item in the array, and check if any of them includes our condition. It will return boolean.
6. reverse()
β reverse() method reverses an array. Be careful since reverse() is destructive, which means it changes the original array.
β reverse() method reverses an array. Be careful since reverse() is destructive, which means it changes the original array.
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