JS - Data Types
JavaScript has 8 built-in data types (with the latest ECMAScript standard):
We have the Primitives ones:
Null Boolean Undefined Number BigInt String Symbol and the Objects.
And you can check the type of each data type with the typeof operator:
let helloMessage = "Hello World"; typeof(helloMessage); //Output: "string" let myAge = 32; typeof(myAge); //Output: "number" const myPerson = { name: 'Yves', age: 32, } typeof(myPerson); //Output: "object" We have also have undefined and undeclared which is basically when you define a variable without a value (the default value is undefined).
