There are 40 array methods in Javascript as per MDN
These are the 6 that I use the most:
These are the 6 that I use the most:
1. map():
.map() creates a new array with the result of calling a function (that you'll supply) on every item of the array on which it is called.
.map() creates a new array with the result of calling a function (that you'll supply) on every item of the array on which it is called.
2. filter():
.filter() as the name suggests is used to filter out some (or all if the criteria is fulfilled) elements out of an array into a new array based on given criteria.
.filter() as the name suggests is used to filter out some (or all if the criteria is fulfilled) elements out of an array into a new array based on given criteria.
3. reduce():
.reduce() method reduces the array to a single value.
It executes a supplied callback function once for every element of the array and stores the result in something called an accumulator.
This accumulator becomes the final result once all elements are done!
.reduce() method reduces the array to a single value.
It executes a supplied callback function once for every element of the array and stores the result in something called an accumulator.
This accumulator becomes the final result once all elements are done!
4. concat():
This method concatenates (or joins) two arrays together and returns a new array as the final result.
This method concatenates (or joins) two arrays together and returns a new array as the final result.
5. slice():
This method is used to get a copy of a section of an array as the result.
It doesn't modify the original array.
This method is used to get a copy of a section of an array as the result.
It doesn't modify the original array.
6. splice():
This method is just like the previous method but is a bit more dangerous as it modifies the original array directly.
It is used to add/delete or replace the content of an array.
You can learn more about it here:
This method is just like the previous method but is a bit more dangerous as it modifies the original array directly.
It is used to add/delete or replace the content of an array.
You can learn more about it here:
Of course there are more methods, but in my experience, these are the ones I've used most frequently.
You can go through this thread for more:
You can go through this thread for more:
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