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78 lines
1.3 KiB
Markdown
78 lines
1.3 KiB
Markdown
---
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id: 68ee9e3066cfd4eb2328e8a7
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title: "Challenge 88: Weekday Finder"
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challengeType: 28
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dashedName: challenge-88
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---
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# --description--
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Given a string date in the format `YYYY-MM-DD`, return the day of the week.
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Valid return days are:
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- `"Sunday"`
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- `"Monday"`
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- `"Tuesday"`
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- `"Wednesday"`
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- `"Thursday"`
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- `"Friday"`
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- `"Saturday"`
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Be sure to ignore time zones.
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# --hints--
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`getWeekday("2025-11-06")` should return `Thursday`.
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```js
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assert.equal(getWeekday("2025-11-06"), "Thursday");
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```
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`getWeekday("1999-12-31")` should return `Friday`.
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```js
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assert.equal(getWeekday("1999-12-31"), "Friday");
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```
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`getWeekday("1111-11-11")` should return `Saturday`.
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```js
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assert.equal(getWeekday("1111-11-11"), "Saturday");
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```
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`getWeekday("2112-12-21")` should return `Wednesday`.
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```js
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assert.equal(getWeekday("2112-12-21"), "Wednesday");
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```
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`getWeekday("2345-10-01")` should return `Monday`.
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```js
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assert.equal(getWeekday("2345-10-01"), "Monday");
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```
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# --seed--
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## --seed-contents--
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```js
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function getWeekday(dateString) {
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return dateString;
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}
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```
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# --solutions--
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```js
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function getWeekday(dateString) {
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const days = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
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const [year, month, day] = dateString.split("-").map(Number);
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const date = new Date(Date.UTC(year, month - 1, day));
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return days[date.getUTCDay()];
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}
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```
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