Number

Some example of number: 10, 1.234, 1.99e9, NaN, Infinity, -Infinity

console.log(2.99e9);
console.log(0 /0);
console.log(1 /0);
console.log(-1 /0);

Automatic Conversion

console.log(8 * null); // -> 0
console.log("5" - 1); // -> 4
console.log("5" + 1); //-> 51
console.log(false == 0) //-> true