Revisions to Loop through an array in JavaScript

Second iteration [<https://en.wikipedia.org/wiki/Sentence_clause_structure#Run-on_sentences>].

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edited Oct 30, 2020 at 8:26

31.3k
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Yes, you can do the same in JavaScript using a loop, but not limited to that, there. There are many ways to do a loop over arrays in JavaScript. Imagine you have this array below, and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

A for loop is a common way looping through arrays in JavaScript, but it is no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) {
  console.log(arr[i]);
}

2) While loop

A while loop is considered as the fastest way to loop through long arrays, but it is usually less used in the JavaScript code:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
A do while is doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do JavaScript loops, but there are a few more ways to do that.

Also we use a for in loop for looping over objects in JavaScript.

Also look at the map(), filter(), reduce(), etc. functions on an Array in JavaScript. They may do things much faster and better than using while and for.

This is a good article if you like to learn more about the asynchronous functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Yes, you can do the same in JavaScript using a loop, but not limited to that, there are many ways to do a loop over arrays in JavaScript. Imagine you have this array below, and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

A for loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) {
  console.log(arr[i]);
}

2) While loop

A while loop is considered as the fastest way to loop through long arrays, but it is usually less used in the JavaScript code:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
A do while is doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do JavaScript loops, but there are a few more ways to do that.

Also we use a for in loop for looping over objects in JavaScript.

Also look at the map(), filter(), reduce(), etc. functions on an Array in JavaScript. They may do things much faster and better than using while and for.

This is a good article if you like to learn more about the asynchronous functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Yes, you can do the same in JavaScript using a loop, but not limited to that. There are many ways to do a loop over arrays in JavaScript. Imagine you have this array below, and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

A for loop is a common way looping through arrays in JavaScript, but it is no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) {
  console.log(arr[i]);
}

2) While loop

A while loop is considered as the fastest way to loop through long arrays, but it is usually less used in the JavaScript code:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
A do while is doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do JavaScript loops, but there are a few more ways to do that.

Also we use a for in loop for looping over objects in JavaScript.

Also look at the map(), filter(), reduce(), etc. functions on an Array in JavaScript. They may do things much faster and better than using while and for.

This is a good article if you like to learn more about the asynchronous functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Active reading [<https://en.wikipedia.org/wiki/JavaScript> <https://www.youtube.com/watch?v=1Dax90QyXgI&t=17m54s>].

Source Link

edited Sep 28, 2019 at 22:02

Peter Mortensen

31.3k
22
109
132

Yes, you can do the same in JavaScript using a loop, but not limited to that, there are many ways to do a loop over arrays in JavaScrip, imagineJavaScript. Imagine you have this array below, and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

ForA for loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) { 
  console.log(arr[i]);
}

2) While loop

WhileA while loop is considered as the fastest way to loop through long arrays, but it is usually less used in the JavaScript code:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
Do whileA do while is doing the same thing as whilewhile with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do javascriptJavaScript loops, but there are a few more ways to do that.

Also we use a for in loop for looping over objects in javascriptJavaScript.

Also look at the map(), filter(), reduce(), etc. functions on an Array in JavaScript. They may do things much faster and better than using while and for.

This is a good article if you like to learn more about the asyncasynchronous functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Yes, you can do the same in JavaScript using loop, but not limited to that, many ways to do loop over arrays in JavaScrip, imagine you have this array below and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

For loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) { 
  console.log(arr[i]);
}

2) While loop

While loop considered as the fastest way to loop through long arrays, but usually less used in the JavaScript:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
Do while doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do javascript loops, but there are few more ways to do that.

Also we use for in loop for looping over objects in javascript.

Also look at map(), filter(), reduce() etc functions on Array in JavaScript. They may do things much faster and better than using while and for.

This is good article if you like to learn more about the async functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Yes, you can do the same in JavaScript using a loop, but not limited to that, there are many ways to do a loop over arrays in JavaScript. Imagine you have this array below, and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

A for loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) {
  console.log(arr[i]);
}

2) While loop

A while loop is considered as the fastest way to loop through long arrays, but it is usually less used in the JavaScript code:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
A do while is doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do JavaScript loops, but there are a few more ways to do that.

Also we use a for in loop for looping over objects in JavaScript.

Also look at the map(), filter(), reduce(), etc. functions on an Array in JavaScript. They may do things much faster and better than using while and for.

This is a good article if you like to learn more about the asynchronous functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

added 8 characters in body

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edited Sep 22, 2019 at 1:27

Alireza

103.5k
27
275
173

YesYes, you can do the same in JavaScript using loop, but not limitednot limited to that, many ways to do loop over arrays in JavaScrip, imagine you have this array below and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

For loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) { 
  console.log(arr[i]);
}

2) While loop

While loop considered as the fastest way to loop through long arrays, but usually less used in the JavaScript:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
Do while doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do javascript loops, but there are few more ways to do that.

Also we use for in loop for looping over objects in javascript.

Also look at map(), filter(), reduce() etc functions on Array in JavaScript. They may do things much faster and better than using while and for.

This is good article if you like to learn more about the async functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Yes, you can do the same in JavaScript using loop, but not limited to that, many ways to do loop over arrays in JavaScrip, imagine you have this array below and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

For loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) { 
  console.log(arr[i]);
}

2) While loop

While loop considered as the fastest way to loop through long arrays, but usually less used in the JavaScript:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
Do while doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do javascript loops, but there are few more ways to do that.

Also we use for in loop for looping over objects in javascript.

Also look at map(), filter(), reduce() etc functions on Array in JavaScript. They may do things much faster and better than using while and for.

This is good article if you like to learn more about the async functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

Yes, you can do the same in JavaScript using loop, but not limited to that, many ways to do loop over arrays in JavaScrip, imagine you have this array below and you'd like to do a loop over it:

var arr = [1, 2, 3, 4, 5];

These are the solutions:

1) For loop

For loop is a common way looping through arrays in JavaScript, but no considered as the fastest solutions for large arrays:

for (var i=0, l=arr.length; i<l; i++) { 
  console.log(arr[i]);
}

2) While loop

While loop considered as the fastest way to loop through long arrays, but usually less used in the JavaScript:

let i=0;

while (arr.length>i) {
    console.log(arr[i]);
    i++;
}

3) Do while
Do while doing the same thing as while with some syntax difference as below:

let i=0;
do {
  console.log(arr[i]);
  i++;
}
while (arr.length>i);

These are the main ways to do javascript loops, but there are few more ways to do that.

Also we use for in loop for looping over objects in javascript.

Also look at map(), filter(), reduce() etc functions on Array in JavaScript. They may do things much faster and better than using while and for.

This is good article if you like to learn more about the async functions over arrays in JavaScript.

Functional programming has been making quite a splash in the development world these days. And for good reason: Functional techniques can help you write more declarative code that is easier to understand at a glance, refactor, and test.

One of the cornerstones of functional programming is its special use of lists and list operations. And those things are exactly what the sound like they are: arrays of things, and the stuff you do to them. But the functional mindset treats them a bit differently than you might expect.

This article will take a close look at what I like to call the "big three" list operations: map, filter, and reduce. Wrapping your head around these three functions is an important step towards being able to write clean functional code, and opens the doors to the vastly powerful techniques of functional and reactive programming.

It also means you'll never have to write a for loop again.

Read more>> here:

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edited Jan 18, 2018 at 1:19

Alireza

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edited Sep 3, 2017 at 9:42

Alireza

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created May 27, 2017 at 2:57

Alireza

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