One trick you should know when working with the"typeof" operator in Javascript

JavaScript has 5 different data types that can contain values:

• string
• number
• boolean
• object
• function

The "typeof" Operator

You can use the?typeof?operator to find the data type of a JavaScript variable.

Did you know that when a variable is given the value of "null" in javascript, the output turns out as "object"?

See example;

var XYZ = null;        

Notice that our output will display as "object" .

document.write(typeof(XYZ));
        

Output =

 object