36 lines
1.4 KiB
Markdown
36 lines
1.4 KiB
Markdown
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---
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title: Confirm the Ending
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---
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## Confirm the Ending
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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# 🌻 Intermediate Code Solution:
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(Declarative approach)
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```javascript
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function confirmEnding(str, target) {
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// "Never give up and good luck will find you."
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// -- Falcor
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return str.slice(str.length - target.length) === target;
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}
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confirmEnding("He has to give me a new name", "name");
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```
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#### 🚀 [Run Code](https://repl.it/repls/SardonicRoundAfkgaming)
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# Code Explanation:
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- First we use the `slice` method copy the string.
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- In order to get the last characters in `str` equivalent to the `target`'s length we use the `slice` method.
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- The first parameter inside the `slice` method is the starting index and the second parameter would be the ending index.
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- For example `str.slice(10, 17)` would return `give me`.
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- In this case we only include one parameter which it will copy everything from the starting index.
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- We substract the length of `str` and the length of `target`, that way, we shall get the last remaining characters equivalent to the `target`'s length.
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- Finally we compare the return result of slice to `target` and check if they have the same characters.
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### Relevant Links
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- [String.prototype.slice()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/slice)
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