????? ???, ?? ??? ??? ?? ?? ??? ??? ????.
??: 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
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