29 lines
677 B
Markdown
29 lines
677 B
Markdown
---
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title: Range generator
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tags: function,generator
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author: chalarangelo
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cover: dark-leaves-6
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firstSeen: 2020-10-11T17:05:55+03:00
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lastUpdated: 2020-10-11T17:05:55+03:00
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---
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Creates a generator, that generates all values in the given range using the given step.
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- Use a `while` loop to iterate from `start` to `end`, using `yield` to return each value and then incrementing by `step`.
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- Omit the third argument, `step`, to use a default value of `1`.
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```js
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const rangeGenerator = function* (start, end, step = 1) {
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let i = start;
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while (i < end) {
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yield i;
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i += step;
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}
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};
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```
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```js
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for (let i of rangeGenerator(6, 10)) console.log(i);
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// Logs 6, 7, 8, 9
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```
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