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71 lines
1.5 KiB
Markdown
71 lines
1.5 KiB
Markdown
---
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id: 56533eb9ac21ba0edf2244ba
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title: Die Unveränderlichkeit von Strings verstehen
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/cWPVaUR'
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forumTopicId: 18331
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dashedName: understand-string-immutability
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---
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# --description--
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In JavaScript sind `String`-Werte <dfn>unveränderlich</dfn>, d.h. sie können nach ihrer Erstellung nicht mehr verändert werden.
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For example, the following code will produce an error because the letter `B` in the string `Bob` cannot be changed to the letter `J`:
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```js
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let myStr = "Bob";
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myStr[0] = "J";
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```
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Note that this does *not* mean that `myStr` could not be re-assigned. The only way to change `myStr` would be to assign it with a new value, like this:
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```js
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let myStr = "Bob";
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myStr = "Job";
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```
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# --instructions--
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Korrigiere die Zuweisung an `myStr` so, dass sie den String-Wert von `Hello World` enthält, indem du den Ansatz aus dem obigen Beispiel verwendest.
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# --hints--
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`myStr` sollte einen Wert des Strings `Hello World` haben.
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```js
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assert(myStr === 'Hello World');
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```
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Du solltest den Code oberhalb des vorgegebenen Kommentars nicht ändern.
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```js
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assert(/myStr = "Jello World"/.test(code));
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```
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# --seed--
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## --after-user-code--
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```js
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(function(v){return "myStr = " + v;})(myStr);
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```
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## --seed-contents--
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```js
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// Setup
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let myStr = "Jello World";
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// Only change code below this line
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myStr[0] = "H"; // Change this line
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// Only change code above this line
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```
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# --solutions--
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```js
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let myStr = "Jello World";
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myStr = "Hello World";
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```
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