Javascript print all elements

JavaScript: Printing array elements

When you need to print array elements, you can loop over the array and print each element to the console as follows:

The array elements will be printed to the console as follows:

Now sometimes you want the elements to be printed in a nice format to a web page. You can do so by assigning the array as the innerHTML property of an element.

But when you have an array of objects, the innerHTML of the element will be set as [object Object] instead of the array elements. To print an array of objects properly, you need to format the array as a JSON string using JSON.stringify() method and attach the string to a

tag in your HTML page.

Try the following example:

And that’s how you can print JavaScript array elements to the web page.

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How to print array elements?

To get the elements in the order of the indices, you could take a standard statement and go from the first element to the end of the array. Or you want to print array elements in string format or something else.

JavaScript Print Array Elements

This tutorial demonstrates how you can print JavaScript array elements . It also depends on your project needs, whether you want to print the whole array or a particular number of elements.

Or you want to print array elements in string format or something else. Let’s explore different ways to print JavaScript array s.

Different Ways to Print Array Elements in JavaScript

The for and while loops iterates over the array elements , one at a time, and each element is printed on a separate line while we can get this same output using the forEach() method.

The forEach() function runs the particular method once for every array element .

We can print all Array Elements by passing the array’s name to the console.log() function. We can also use map() and join() methods to manipulate first and then print the array’s elements .

For instance, we want to number each array element in the output.

The map() function creates a new array from calling a function once for each element but does not change the original array. Remember, it does not run the function for an empty element.

The join() function acts like a separator that separates the array’s elements with a specified separator.

The pop() returns you the last element while shift() returns the first element of the array, but both are best to use when you want those elements to be removed from a string because both can change the original array.

The toString() function converts the array to string format. The slice() function gives us the selected element of the array as a new array but does not change the original array.

It can also work according to the particular start and end indexes (the end index is exclusive here).

Use for Loop to Print Array Elements in JavaScript

Let’s start with using a simple for loop to print a complete JavaScript array.

var names = ["mehvish", "tahir", "aftab", "martell"]; //for loop for(var i=0; i

"mehvish" "tahir" "aftab" "martell" 

Use while Loop to print array elements in JavaScript

Let’s see below how the while loop produces the output.

var names = ["mehvish", "tahir", "aftab", "martell"]; var i=0; //while loop while(i

"mehvish" "tahir" "aftab" "martell" 

Use forEach Method to Print Array Elements in JavaScript

Have you thought of the forEach method to print a complete JavaScript array (one element per line)? See the code snippet below.

var names = ["mehvish", "tahir", "aftab", "martell"]; names.forEach(element => console.log(element)); 

"mehvish" "tahir" "aftab" "martell" 

Use console.log() Function to print array element s in JavaScript

We have explored the ways that print the complete array but one element on each line. You can print all array elements on a single line as follows.

var names = ["mehvish", "tahir", "aftab", "martell"]; console.log(names); 

["mehvish", "tahir", "aftab", "martell"] 

Use map() With join() Method to Print array elements in javascript

We can also display all elements in one line using the following way as well.

var names = ["mehvish", "tahir", "aftab", "martell"]; var element = names.map( (e,i) => (i+1+"."+e) ).join(' '); console.log(element); 

"1.mehvish 2.tahir 3.aftab 4.martell" 

Use toString() Function to Print Array Elements in JavaScript

Have you thought that we have a function named toString() that can convert the array into a string. See the following code example.

var names = ["mehvish", "tahir", "aftab", "martell"]; console.log(names.toString()); 

Use join() Function to Print Array Elements in JavaScript

We saw the array is converted into string above, but each element is separated with a comma. What if we want all elements to be separated into a single space? For that, the join() function is used.

var names = ["mehvish", "tahir", "aftab", "martell"]; console.log(names.join(" ")); 

"mehvish tahir aftab martell" 

Use pop() Function to Print Array Elements in JavaScript

Are you thinking to print only the last element of the array? We can do that by using the pop() function.

var names = ["mehvish", "tahir", "aftab", "martell"]; console.log(names.pop()); 

Use shift() Method to Print Array Elements in JavaScript

In the following code, the shift() method prints the first element of the array.

var names = ["mehvish", "tahir", "aftab", "martell"]; console.log(names.shift()); 

Use concat() Method to Print Array Elements in JavaScript

We have two separate JavaScript arrays and print both in one line. We want the elements of the second array after the first array’s elements.

We will concatenate the fruitsArrayTwo with fruitsArrayOne using the Concat() method.

var fruitsArrayOne = ["apple", "banana", "grapes"]; var fruitsArrayTwo = ["mango", "water-melon"]; console.log(fruitsArrayOne.concat(fruitsArrayTwo)); 

["apple", "banana", "grapes", "mango", "water-melon"] 

Use slice() Method to Print Array Elements in JavaScript

We can also print a certain array of elements using the slice() method. We can also use the splice() method to add and remove the array’s elements. For details, check this page.

var names = ["mehvish", "tahir", "aftab", "martell"]; console.log(names.slice(0, 2)); //end index is not inclusive here 

JavaScript Array

What’s the simplest way to print a Java array?, Since Java 5 you can use Arrays.toString(arr) or Arrays.deepToString(arr) for arrays within arrays. Note that the Object[] version calls .toString() on each object in the array. The output is even decorated in the exact way you’re asking. Examples: Simple Array: String[] array = new String[] <"John", "Mary", "Bob">; …

How to print array elements?

I am trying to print array element to console using for each loop in javascript. But I am printing something which I am not able to figure out what!

 let arr=["1,2,3","iosajah","undefined"]; for(let data in arr) < console.log(data);// prints 4,0,1,2 if(typeof data === "undefined") < //do something >> 

console.log(data) prints 4,0,1,2

but I expected it to print each array element

You could take a for . of statement where you get the element instead of the for . in statement where you get the indices of the array.

Difference between for. of and for. in

Both for. in and for. of statements iterate over something. The main difference between them is in what they iterate over.

The for. in statement iterates over the enumerable properties of an object, in an arbitrary order.

The for. of statement iterates over values that the iterable object defines to be iterated over.

let arr = ["1,2,3", "iosajah", "undefined"]; for (let data of arr)

To get the elements in the order of the indices, you could take a standard for statement and go from the first element to the end of the array.

let arr = ["1,2,3", "iosajah", "undefined"]; for (let i = 0; i

for in loop is used to iterate through object literals , but since Arrays (and everything else) are actually objects in JavaScript you are actually logging the keys of the Array object which are the index values.

let arr=["1,2,3","iosajah","undefined"]; arr.forEach(function(element) < console.log(element); >); 

Your For/In statement is to traverse properties of an object. If you check the length of your array and step through it. We want values, rather than properties. You can print it this way.

let arr=["1,2,3","iosajah","undefined"]; for(i=0;i > 

for in loops over enumerable property names of an object, you are printing the indexes of the array. If you want to iterate over the values use one of the approaches:

Object.keys(array).map(key => console.log(arrayJavascript print all elements)) 

How to Print an Array in Java, Print an Array Using Arrays.toString () and Arrays.deepToString () The built-in toString () method is an extremely simple way to print out formatted versions of objects in Java. Every data type in Java is considered a class and by default, every class inherits from java.lang.Object, the root of Java’s class …

Typescript/Angular printing out object array elements and grabbing specific elements

This is what appears when I do

However, whenever I try to print anything beyond that, I receive errors or it simply does not print anything.

console.log(projects[0]); console.log(projects.title); 

I have also tried using the for each element loop to no luck.

How would I grab the title of each element within this?

First you need to access first array element and after the property

projects.forEach(projet=>console.log(projet.title)); 

Loop over your array with forEach and log the title of each objects.

const myArray = [, , ]; myArray.forEach(object => console.log(object.title)); 

You can find the documentation of forEach here.

How do you return an array and print it out in java?, If you’re asking how to print the elements of an array, just use a loop. Say we have int [] numbers = new int [] <1, 3, 5, 9, 23>, you can simply iterate over the array using a loop and print each element individually. Arrays.toString () is usually perferred but this is a good way for a beginner to start.

Print array values testCafe typeScript

Please help me to figure out how to get actual values from array instead of these:

[object ReExecutablePromise] [object ReExecutablePromise] [object ReExecutablePromise] [object ReExecutablePromise] [object ReExecutablePromise] 

test('Reference Type', async t=> < await loginPage.login(oceanconfig.testUser, oceanconfig.password); await t.click(HomePage.button); const rowsNum = await CreateShipmentPage.referenceTypeOption().count; const arr = []; for(let i = 1; i< rowsNum-1; i++)< const referenceType = CreateShipmentPage.referenceTypeSelect().innerText; arr.push(referenceType); >const item = await arr.slice(1, 6); for (let row of item) < console.log(row); >>) 

It seems that you miss the ‘await’ operator when getting ‘referenceType’. Please try the code below:

test('Reference Type', async t=> < await loginPage.login(oceanconfig.testUser, oceanconfig.password); await t.click(HomePage.button); const rowsNum = await CreateShipmentPage.referenceTypeOption().count; const arr = []; for(let i = 1; i< rowsNum-1; i++)< const referenceType = await CreateShipmentPage.referenceTypeSelect().innerText; arr.push(referenceType); >const item = await arr.slice(1, 6); for (let row of item) < console.log(row); >>) 

How to print a method with an array Code Example, import java.util.Arrays; class Scratch< public static void main(String[] args)< int[] arr = new int[3]; System.out.println( Arrays.toString( arr )); //prints [0, 0, 0

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