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? ? ????? JS ???? Javascript?? ??? ??? ??? ??? ??

Javascript?? ??? ??? ??? ??? ??

Jan 06, 2025 am 01:35 AM

Opera??es simples com números e arrays em Javascript

????? ???, ?? ??? ??? ?? ?? ??? ??? ????.
??: vscode? ????? ???? ??? ???, vscode? ?? "?? ??"? ???? ??? ?? "? ??"? ? ??? ??? "Example.js" ?? .js? ??? ???? ?????. ??? ? ???? ?? example.js

? ?????.

??:

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

??:

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

??:

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

??:

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

??:

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

??:

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

??:

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.

???:

let x = 11;

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

??? ? ??? ?????:

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]);

?? ?? ??:

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

?? ??:

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

? ??:

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

? ??? Javascript?? ??? ??? ??? ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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