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Introduction to JavaScript

Sveip for å vise menyen

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Strings 4/5

Strings are Immutable:

Strings, in JavaScript, are immutable which means that their values cannot be changed once declared.

Let’s try to understand this with an example.


              
1234

            
let  stringVariable = 'JavaScript';
// changing the value of first character.
stringVariable[0] = 'A';
console.log(stringVariable[0]);
copy

The value did not change.

To do so, the usual practice is to create a new string variable with the value that we want to change and attach the parts of the older string to it. In this way, we can change the string,


              
1234

            
let  str = 'Gi';
// replacing the string G with H
str = 'H' + str[1];
console.log(str);
copy
Oppgave

Swipe to start coding

A variable name order with the assigned value of go has been given to you. Your task is to change the value go to to and display it.

Løsning

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 22
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book
Strings 4/5

Strings are Immutable:

Strings, in JavaScript, are immutable which means that their values cannot be changed once declared.

Let’s try to understand this with an example.


              
1234

            
let  stringVariable = 'JavaScript';
// changing the value of first character.
stringVariable[0] = 'A';
console.log(stringVariable[0]);
copy

The value did not change.

To do so, the usual practice is to create a new string variable with the value that we want to change and attach the parts of the older string to it. In this way, we can change the string,


              
1234

            
let  str = 'Gi';
// replacing the string G with H
str = 'H' + str[1];
console.log(str);
copy
Oppgave

Swipe to start coding

A variable name order with the assigned value of go has been given to you. Your task is to change the value go to to and display it.

Løsning

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 22
Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Vi beklager at noe gikk galt. Hva skjedde?
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