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It is helpful when you need to define a mixin that abstracts out either wrapping a piece of code inside a media query or even a non-supported browser class title. The rulesets is usually handed to mixin so which the mixin can wrap the content, e.g.

operator by separating guards with a comma ,. If any on the guards evaluate to genuine, It really is considered a match:

Increase is not able to match selectors with variables. If selector has variable, extend will dismiss it.

Use @import (optional) to permit importing of the file only when it exists. With no optional keyword Less throws a FileError and stops compiling when importing a file that can not be discovered. Introduced v2.3.0

This lets you pull in only particular, qualified types from the library for example Bootstrap by carrying out something similar to this:

It may be handy to prepend a selector towards the inherited (mum or dad) selectors. This may be finished by Placing the & right after latest selector.

Nonetheless, you would need to return a correct Less node should you wanted to, say, multiply that from other values or do other Less operations. Normally the output with your stylesheet is plain textual content (which may be wonderful for your purposes).

In case you have multiple matching mixins, all procedures are evaluated and merged, and the final matching benefit with that identifier is returned. This is similar towards the cascade in CSS, and it means that you can "override" mixin values.

Starting up in Less 3.5, you can use assets/variable accessors to pick a price from an evaluated mixin's regulations. This may let you use mixins comparable to capabilities.

If a ruleset is made up of various selectors, any of these can possess the lengthen key word. Various selectors with prolong in a single ruleset:

Only variables current in callers nearby scope are protected. Variables inherited from parent scopes are overridden.

It's also possible to achieve an if sort assertion by combining this Using the & feature, making it possible for you to team a number of guards. & when (@my-solution = accurate) button color: white; a colour: blue;

It's authorized to determine many mixins While using the identical title and quantity of parameters. Less will use Houses of all which will use. In case you used the mixin with a single parameter e.g. .mixin(environmentally friendly);, then Qualities of all mixins with specifically just one required parameter are going to be used:

Working with Less.js get more info inside the browser is the easiest way to get going and convenient for building with Less, but in output, when efficiency and trustworthiness is crucial, we recommend pre-compiling making use of Node.js or among the lots of third party tools out there.