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17 lines
766 B
17 lines
766 B
4 weeks ago
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# match-at [](https://travis-ci.org/spicyj/match-at)
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## Introduction
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Like `String.prototype.match` if it only checked the regex at the given index instead of searching the entire string.
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```js
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matchAt(/world/, 'hello world', 6); // ['world']
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matchAt(/world/, 'hello world', 0); // null
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```
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Almost like `'hello world'.slice(i).match(/^world/)` except the resulting match object's `.index` property corresponds to the original string, and it doesn't actually slice the string. Most engines optimize taking a substring so this probably isn't particularly valuable in practice, but it was an entertaining exercise and could be useful if you reminisce about these semantics.
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## License
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MIT.
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