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Note: build.sh updated to make sure that test:help build action:target doesn't also call test.sh by adding `:_all` meta-target. Note: CI will need a new help-keyman-com.sh build step to deploy web engine help. Fixes: #12347
44 lines
655 B
Markdown
44 lines
655 B
Markdown
---
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title: rgba
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---
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## Summary
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Browser-independent alpha-channel management.
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## Syntax
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```c
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keyman.util.rgba(s, r, g, b, a);
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```
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### Parameters
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`s`
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: Type: `Element`
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: Element style object
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`r`
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: Type: `number`
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: Value for red (0-255)
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`g`
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: Type: `number`
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: Value for green (0-255)
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`b`
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: Type: `number`
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: Value for blue (0-255)
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`a`
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: Type: `number`
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: Value for alpha/opacity (0-1.0)
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### Return Value
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`string`
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: Background color CSS value.
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## Description
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This function returns the required string value for setting background transparency, and applies an appropriate `a` filter to the element for IE versions before IE9.
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