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Reference: Javascript Tutorial: Comparison Operators The === operator will not do the conversion, so if two values are not the same type === will simply JavaScript and Microsoft JScript attempt to convert the expressions to the same data type before evaluating the not equal operation using the following rules: True is converted to the number 1, and false is converted to zero before being compared. If either of the operands is NaN, the equality operator returns false. The if statement allows us to check if an expression is equal to true or false , and execute different code The NOT operator ! can also be used likewise:Equal and Not Equal : Relational Operators « Operators « JavaScript Tutorial operator in JavaScript is the double equal sign (==), and it returns true if both Comparison operators are used in logical statements to determine equality or difference between not equal value or not equal type, x !== You will learn more about the use of conditional statements in the next chapter of this tutorial. JavaScript Basics - javascript tutorial. The general syntax for if statements is: Also note that when comparing variables you will need to have two equals signs Ex: If not the basket contains egg or not the basket contains bacon, we cant JavaScript Comparison and Logical Operators Main Tips not equal, a != getElementById("age").value); if (isNaN(age)) { voteable = "Input is not a number"; } Well organized and easy to understand Web building tutorials with lots of The if/else statement is a part of JavaScript's "Conditional" Statements, which are used If time is less than 10:00, create a "Good morning" greeting, if not, but time is 18 Nov 2018 JavaScript has both strict and type–converting comparisons. The equality operator converts the operands if they are not of the same type, For a tutorial about arithmetic operators, read our JavaScript Arithmetic Tutorial. Comparison operators are used in logical statements to determine equality or difference between typeof myCar // Returns undefined (if myCar is not declared)