Values

altr will do a lookup of a variable name my_value in when either of the following are true: - {{ my_value }} appears in any DOM node’s [textContent][textContent] or in any DOM node attribute that is not prefixed by altr. - DOM attribute matches altr-attr-*="my_value".

The altr-attr-my-attribute="my_value" syntax will set the my-attribute attribute on the DOM node to whatever my_value evaluates to in the current template context. When the template context is updated, this will update as well. If my_value evaluates to null, undefined or false, then my-attribute will simply be excluded, which is useful for boolean attributes such as checked (which can also have a value), or for SVG elements which will throw errors for illegal values.

Template variable lookups are backed by [dirtybit][dirtybit]. dirtybit supports dot-path lookups, literals, a wide range of operators, as well as filters. See the documentation for more details.

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