21 lines
533 B
Markdown
21 lines
533 B
Markdown
---
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title: either
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tags: function,logic,beginner
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---
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Returns `true` if at least one function returns `true` for a given set of arguments, `false` otherwise.
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- Use the logical or (`||`) operator on the result of calling the two functions with the supplied `args`.
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```js
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const either = (f, g) => (...args) => f(...args) || g(...args);
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```
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```js
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const isEven = num => num % 2 === 0;
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const isPositive = num => num > 0;
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const isPositiveOrEven = either(isPositive, isEven);
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isPositiveOrEven(4); // true
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isPositiveOrEven(3); // true
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```
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