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Introduction to JavaScript

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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.


              
123

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

Swipe to start coding

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.

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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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Seksjon 3. Kapittel 3

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book
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.


              
123

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

Swipe to start coding

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.

Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

Seksjon 3. Kapittel 3
Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
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