Loops, conditionals

const N=7;
let k=0;
for (k = 0; k < N; k++) {
  if( k%2 === 0 ) {
    console.log( k );
  }
}

• - let: define a variable (can be re-assigned)
• - const: define a non re-assignable variable

• Avoid var: outdated JavaScript, bad scoping