Here we learn JavaScript, starting from scratch, and going on to advanced concepts like OOP.We concentrate on the language itself here, with a minimum of environment-specific notes.A computer program is a list of "instructions" to be "executed" by a computer.In a programming language, the programming instructions are called statements.A JavaScript program is a list of programming statements.
let x, y, z; // Statement 1
x = 5; // Statement 2
y = 6; // Statement 3
z = x + y; // Statement 4