ReasonJun

number //? .toFixed() // Returns a number as a character representing a number to the specified decimal notation (number of digits). console.log(num.toFixed(2)); // 3.14 console.log(parseFloat(num.toFixed(2))); // 3.14 => number // .toLocalString() // Returns a number as a character in local language format. const num1 = 100000; console.log(num1.toLocaleString()); // 100,000 => string // Number...

const string1 = 'Hello'; const string2 = 'Hello'; const string3 = `Hello ${string1}`; console.log(string3); // Hello Hello const number = -123; console.log(number + 1); // -122 console.log(number + undefined); // NAN console.log(typeof (number + 1)); // -122 console.log(typeof (number + undefined)); // number const a = 0.1; const b = 0.2; console.log(a + b); // 0.30000000000000004 // Floating Po..