Create a javascript program that declares and prints an array

The literal notation array makes it simple to create arrays in JavaScript. It comprises of two square brackets that wrap optional, comma-separated array elements. Number, string, boolean, null, undefined, object, function, regular expression, and other structures can be any type of array element. You can add extra elements to the country array; then you can do it as shown below.

The array can be created with the array directly by using the new keyword as shown below in the syntax. Below an example of creating an array in JavaScript by using Array Directly with the help of the new keyword. Passing arguments in a constructor can create the array instance.

The following example creates an array in JavaScript by using Array Constructor with the help of the new keyword. You can create a new array with a combination of two or more arrays with the help of the concat method. It returns true if the condition matches the given condition otherwise returns false. Where callback is a condition to test the function, and thisArg is an optional parameter used when executing the callback.

The fill method is used to fill the specified static values by modifying original values in the given array. The includes method is used to check whether the given element is included in the array or not.

If the element is included in an array, then it returns true otherwise returns false. The join method is used to combine the array elements into the string and provides a new string. The reverse method is used to reverse the sequence of the given array of elements. The last element will become the first, and the first element will become the last. The slice method is used to display part of the given array elements without changing the original array.

As discussed until now, an array is a special kind of object for storing and managing data elements. Explore Java Examples. Find Largest Element of an Array. Calculate Standard Deviation. Multiply to Matrix Using Multi-dimensional Arrays. Multiply two Matrices by Passing Matrix to a Function. Find Transpose of a Matrix. Print an Array. Related Topics Java Copy Arrays. Java Multidimensional Arrays. Java Object toString. Java Program to Print an Array In this program, you'll learn different techniques to print the elements of a given array in Java.

Example 2: Print an Array using standard library Arrays import java. Share on:. Arrays use numbers to access its "elements". In this example, person[0] returns John:. Objects use names to access its "members". In this example, person. You can have objects in an Array. You can have functions in an Array. You can have arrays in an Array:. The length property of an array returns the length of an array the number of array elements. The length property is always one more than the highest array index.

The easiest way to add a new element to an array is using the push method:. New element can also be added to an array using the length property:. Adding elements with high indexes can create undefined "holes" in an array:. If you use named indexes, JavaScript will redefine the array to an object. The problem is that the JavaScript operator typeof returns " object ":.