Booleans, Functions, and Objects
In this lesson, you will learn how to declare a variable that can hold true or false.
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Boolean primitive type
A boolean value is the most basic primitive in JavaScript and it remains the same with TypeScript. Boolean values restrict the assignment to two values: true and false. These terms are case sensitive – only the lowercase format is accepted.
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let b: boolean = true;console.log(b);
You cannot assign the value 0 or 1, or the true or false values using any upper case letters. ...