The syntax for the
.map() method is as follows:
.map() method takes a callback function as its argument, which gets executed on each element of the array. The callback function can have three optional parameters:
currentValue: Represents the current element being processed in the array.
index: Represents the index of the current element being processed.
array: The array on which the
.map() method was called upon.
Additionally, you can pass an optional
thisArg parameter, which represents the value to be used as
this when executing the callback function.
One of the key advantages of the
.map() method is its ability to transform data within an array. By implementing a callback function that defines the desired transformation logic, you can easily modify each element of an array without directly modifying the original array.
Here's an example that demonstrates how to use the
.map() method to double each element of an array:
.map() method can be used in various scenarios, such as:
Create a new variable called
doubledNumbers and assign it the result of using the
.map() method on the
.map() method, pass a callback function that takes in a parameter
num multiplied by 2.
doubledNumbers to the console.
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