JavaScript and Type Conversion

JavaScript is a dynamic-type language:

We can assign any type of value to a variable. We can also change the type of a variable at any time and any position in the code. Let’s say we have assigned a string value to a variable, and then we want to change the type of that variable to a number.


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let totalPrice = "thousand";
totalPrice = 1000;
console.log(totalPrice);

Opgave

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A variable named totalDaysInMonth with the assigned string value of thirty has been given to you. Your task is to change the type of the variable from string to a number and display it on the console.

Løsning

Summary:

The number datatype is for all kinds of numbers like integer or floating-point numbers.
The boolean variables can only have true or false as their values.
The typeof operator allows us to see the type of value stored in a variable.
JavaScript is a dynamic-type language, so we can change the type of data in it.

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Sektion 3. Kapitel 3

JavaScript and Type Conversion

JavaScript is a dynamic-type language:


              123
            
let totalPrice = "thousand";
totalPrice = 1000;
console.log(totalPrice);

Opgave

Swipe to start coding

Løsning

Summary:

The number datatype is for all kinds of numbers like integer or floating-point numbers.
The boolean variables can only have true or false as their values.
The typeof operator allows us to see the type of value stored in a variable.
JavaScript is a dynamic-type language, so we can change the type of data in it.

Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder

Var alt klart?

Tak for dine kommentarer!

Sektion 3. Kapitel 3

Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder