JavaScript, если нет
var isDay = false;
if (!isDay) { //Will execute if isDay is false
console.log("It's night");
}
TC5550
var isDay = false;
if (!isDay) { //Will execute if isDay is false
console.log("It's night");
}// === means equal value and equal type
var x = 5
// true
x === 5
// false
x === "5"