Following is the syntax of defining the variables with boolean type in typescript.
[Keyword] [Variable Name]: [boolean] = [Value];[Keyword] [Variable Name]: [boolean];
If you observe the above syntax, we added a
boolean datatype after the variable name to tell the compiler that the boolean type of data the variable can hold.
constto define the scope and usage of variables.
Now, we will learn how to use boolean data types in TypeScript with examples.
Following is the example of defining the variables with boolean data type in typescript.
var isVerified: boolean = true;
var isDone: Boolean = false;
console.log(isVerified); // true
console.log(isDone); // false
If you observe the above boolean type example, we defined the variables with lower case
boolean type and upper case
Boolean type. Here, the lower case
boolean is a primitive type and the upper case
Boolean is an object type. In TypeScript, it’s always recommended to use primitive lower case
This is how we can use boolean type in typescript to define the variables to accept only boolean values based on our requirements.