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JavaScript - Array

The Array object lets you store multiple values in a single variable. It stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type.

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Saab,Volvo,BMW

Access the Elements of an Array

You can access an array element by referring to the index number.

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JavaScript array elements are accessed using numeric indexes (starting from 0).

Audi

Array Methods


Array concat() Method

Javascript array concat() method returns a new array comprised of this array joined with two or more arrays.

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alphaNumeric : a,b,c,1,2,3

Array every() Method

Javascript array every method tests whether all the elements in an array passes the test implemented by the provided function.

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First Test Value : false
Second Test Value : true

Array filter() Method

Javascript array filter() method creates a new array with all elements that pass the test implemented by the provided function.

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Result

Filtered Value : 12,130,44

Array forEach() Method

Javascript array forEach() method calls a function for each element in the array.

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Result

[0] is 12
[1] is 5
[2] is 8
[3] is 130
[4] is 44

Array indexOf() Method

Javascript array indexOf() method returns the first index at which a given element can be found in the array, or -1 if it is not present.

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Result

index is : 2
index is : -1

Array join() Method

Javascript array join() method joins all the elements of an array into a string.

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str : First,Second,Third
str : First, Second, Third
str : First + Second + Third

Array pop() Method

Javascript array pop() method removes the last element from an array and returns that element.

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Result

element is : 9
element is : 4

Array reverse() Method

Javascript array reverse() mmethod reverses the element of an array. The first array element becomes the last and the last becomes the first.

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Result

Reversed array is : 3,2,1,0

Array shift() Method

Javascript array shift()method removes the first element from an array and returns that element.

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Result

Removed element is : 105

Array sort() Method

Javascript array sort() method sorts the elements of an array.

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Result

Returned array is : banana,mango,orange,sugar