国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

Home Web Front-end JS Tutorial Simple operations with numbers and arrays in Javascript

Simple operations with numbers and arrays in Javascript

Jan 06, 2025 am 01:35 AM

Opera??es simples com números e arrays em Javascript

Hi everyone, here are some things I learned with numbers and arrays:
note: to start with vscode create a folder on your computer, open vscode go to "Open folder" open your folder create a new file with "New file" and name it with .js at the end "Example.js" and to run your code open a New terminal and type Example.js

sum:

let x = 6;
let y = 5;
x+=y;
console.log(x);

subtraction:

let x = 6;
let y = 5;
x-=y;
console.log(x);

multiplication:

let x = 6;
let y = 5;
x*=y;
console.log(x);

division:

let x = 6;
let y = 5;
x/=y;
console.log(x);

increment:

let x = 10;
x++;
console.log(x);

decrement:

let x = 10;
x--;
console.log(x);

checking:

let x = 11;
let y = 5;


console.log(x<y);
console.log(x>y);
console.log(x==y); //verifica se o valor de x é igual o de y
console.log(x===y); //verifica se o valor E O TIPO de x é igual ao y
console.log(x!=y); //verifica se o valor de x é diferente o de y
console.log(x!==y); //verifica se o valor E O TIPO de x é diferente ao y
//nesse último caso Como os valores já s?o diferentes (11 ≠ 5),
//a compara??o retorna true imediatamente, sem necessidade de verificar o tipo.

conditionals:

let x = 11;

if (x>5) {
    console.log("X é maior que 5");
} else{
    console.log("X é menor que 5");
}

return each element of the array:

var computador = ["memoria", "disco", "placa mae", "processador"];
console.log(computador);
console.log(computador[0]);
console.log(computador[1]);
console.log(computador[2]);
console.log(computador[3]);

show array size:

var computador = ["memoria", "disco", "placa mae", "processador"];
console.log("Quantidade de elementos: ",computador.length);

using push:

var v = [];
v.push(10);
v.push(20);
v.push(30);
v.push(40);
v.push(50);
console.log(v);
//adiciona esses números ao array com push

using pop:

var v = [];
v.push(10);
v.push(20);
v.push(30);
v.push(40);
v.push(50);
console.log(v);

console.log('pop', v.pop(), v); //elimina o elemento 50
console.log('pop', v.pop(), v); //elimina o elemento 40
console.log('pop', v.pop(), v); //elimina o elemento 30
console.log('pop', v.pop(), v); //elimina o elemento 20
console.log('pop', v.pop(), v); //elimina o elemento 10

//pop sempre eliminará primeiro o último e seguindo a partir dele

The above is the detailed content of Simple operations with numbers and arrays in Javascript. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Java vs. JavaScript: Clearing Up the Confusion Java vs. JavaScript: Clearing Up the Confusion Jun 20, 2025 am 12:27 AM

Java and JavaScript are different programming languages, each suitable for different application scenarios. Java is used for large enterprise and mobile application development, while JavaScript is mainly used for web page development.

Javascript Comments: short explanation Javascript Comments: short explanation Jun 19, 2025 am 12:40 AM

JavaScriptcommentsareessentialformaintaining,reading,andguidingcodeexecution.1)Single-linecommentsareusedforquickexplanations.2)Multi-linecommentsexplaincomplexlogicorprovidedetaileddocumentation.3)Inlinecommentsclarifyspecificpartsofcode.Bestpractic

How to work with dates and times in js? How to work with dates and times in js? Jul 01, 2025 am 01:27 AM

The following points should be noted when processing dates and time in JavaScript: 1. There are many ways to create Date objects. It is recommended to use ISO format strings to ensure compatibility; 2. Get and set time information can be obtained and set methods, and note that the month starts from 0; 3. Manually formatting dates requires strings, and third-party libraries can also be used; 4. It is recommended to use libraries that support time zones, such as Luxon. Mastering these key points can effectively avoid common mistakes.

Why should you place tags at the bottom of the ? Why should you place tags at the bottom of the ? Jul 02, 2025 am 01:22 AM

PlacingtagsatthebottomofablogpostorwebpageservespracticalpurposesforSEO,userexperience,anddesign.1.IthelpswithSEObyallowingsearchenginestoaccesskeyword-relevanttagswithoutclutteringthemaincontent.2.Itimprovesuserexperiencebykeepingthefocusonthearticl

JavaScript vs. Java: A Comprehensive Comparison for Developers JavaScript vs. Java: A Comprehensive Comparison for Developers Jun 20, 2025 am 12:21 AM

JavaScriptispreferredforwebdevelopment,whileJavaisbetterforlarge-scalebackendsystemsandAndroidapps.1)JavaScriptexcelsincreatinginteractivewebexperienceswithitsdynamicnatureandDOMmanipulation.2)Javaoffersstrongtypingandobject-orientedfeatures,idealfor

JavaScript: Exploring Data Types for Efficient Coding JavaScript: Exploring Data Types for Efficient Coding Jun 20, 2025 am 12:46 AM

JavaScripthassevenfundamentaldatatypes:number,string,boolean,undefined,null,object,andsymbol.1)Numbersuseadouble-precisionformat,usefulforwidevaluerangesbutbecautiouswithfloating-pointarithmetic.2)Stringsareimmutable,useefficientconcatenationmethodsf

What is event bubbling and capturing in the DOM? What is event bubbling and capturing in the DOM? Jul 02, 2025 am 01:19 AM

Event capture and bubble are two stages of event propagation in DOM. Capture is from the top layer to the target element, and bubble is from the target element to the top layer. 1. Event capture is implemented by setting the useCapture parameter of addEventListener to true; 2. Event bubble is the default behavior, useCapture is set to false or omitted; 3. Event propagation can be used to prevent event propagation; 4. Event bubbling supports event delegation to improve dynamic content processing efficiency; 5. Capture can be used to intercept events in advance, such as logging or error processing. Understanding these two phases helps to accurately control the timing and how JavaScript responds to user operations.

What's the Difference Between Java and JavaScript? What's the Difference Between Java and JavaScript? Jun 17, 2025 am 09:17 AM

Java and JavaScript are different programming languages. 1.Java is a statically typed and compiled language, suitable for enterprise applications and large systems. 2. JavaScript is a dynamic type and interpreted language, mainly used for web interaction and front-end development.

See all articles