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1f82507730
Deprecate the following obsolete functions and properties: * `keyman.helpURL` * `keyman.util.rgba` * `keyman.util.toFloat` * `keyman.util.toNumber` * `keyman.util.toNzString` Use correct language for code blocks in Keyman Engine for Web documentation. Test-bot: skip
42 lines
815 B
Markdown
42 lines
815 B
Markdown
---
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title: nul (KN)
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---
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## Summary
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[`nul`](/developer/language/reference/nul) context check: Returns `true` if the length of the [`context`](/developer/language/reference/context) is less than or equal to `n` characters.
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## Syntax
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```js
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keyman.interface.nul(n, Pelem);
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```
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or
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```js
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KeymanWeb.KN(n, Pelem); // Shorthand
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```
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### Parameters
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`n`
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: Type: `number`
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: The length of `context` to check.
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`Pelem`
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: Type: `Element`
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: The element whose `context` is being examined.
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### Return Value
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`boolean`
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: `true` if the context is not longer than `n` characters, otherwise `false`.
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## Description
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This is of particular use in handling the [Developer rule `nul`](/developer/language/reference/nul) and is subject to the caveats listed therein.
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## See also
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- [`keyman.interface.context()`](context)
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