how to check not equal to false in javascript code example

Example 1: javascript if not

var isDay = false;
if (!isDay) { //Will execute if isDay is false
  console.log("It's night");
}

Example 2: equal to or more than javascript

//Equal to or more than
a >= b
//Equal to or less than
a <= b

Example 3: === javascript

// ===	means equal value and equal type
var x = 5

// true
x === 5

// false
x === "5"