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Jacob Wright 04f5d5c975 Adds actions to components ... Actions add additional functionality to elements within your component's template that may be difficult to add with other mechanisms. Examples of functionality which actions makes trivial to attach are: * tooltips * image lazy loaders * drag and drop functionality Actions can be added to an element with the `use` directive. ```html <img use:lazyload data-src="giant-photo.jpg> ``` Data may be passed to the action as an object literal (e.g. `use:b="{ setting: true }"`, a literal value (e.g. `use:b="'a string'"`), or a value or function from your component's state (e.g. `add:b="foo"` or `add:b="foo()"`). Actions are defined in a "actions" property on your component definition. ```html <script> export default { actions: { b(node, data) { // do something return { update(data) {}, destroy() {} } } } } </script> ``` A action is a function which receives a reference to an element and optionally the data if it is added in the HTML. This function can then attach listeners or alter the element as needed. The action can optionally return an object with the methods `update(data)` and `destroy()`. When data is added in the HTML and comes from state, the action's `update(data)` will be called if defined whenever the state is changed. When the element is removed from the DOM `destroy()` will be called if provided, allowing for cleanup of event listeners, etc. See https://github.com/sveltejs/svelte/issues/469 for discussion around this feature and more examples of how it could be used.		7 years ago
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a11y-alt-text	add end position to warnings	7 years ago
a11y-anchor-has-content	add end position to warnings	7 years ago
a11y-anchor-in-svg-is-valid	add end position to warnings	7 years ago
a11y-anchor-is-valid	add end position to warnings	7 years ago
a11y-aria-props	add end position to warnings	7 years ago
a11y-aria-role	add end position to warnings	7 years ago
a11y-aria-unsupported-element	add end position to warnings	7 years ago
a11y-figcaption-right-place	fix figcaption a11y warning - fixes #996	7 years ago
a11y-figcaption-wrong-place	add end position to warnings	7 years ago
a11y-heading-has-content	add end position to warnings	7 years ago
a11y-html-has-lang	add end position to warnings	7 years ago
a11y-iframe-has-title	add end position to warnings	7 years ago
a11y-no-access-key	add end position to warnings	7 years ago
a11y-no-autofocus	add end position to warnings	7 years ago
a11y-no-distracting-elements	add end position to warnings	7 years ago
a11y-not-on-components	add end position to warnings	7 years ago
a11y-scope	add end position to warnings	7 years ago
a11y-tabindex-no-positive	add end position to warnings	7 years ago
action-invalid	Adds actions to components	7 years ago
action-on-component	Adds actions to components	7 years ago
await-component-is-used	validate contents of await blocks (#1061)	7 years ago
binding-input-checked	add end position to errors	7 years ago
binding-input-type-boolean	add end position to errors	7 years ago
binding-input-type-dynamic	add end position to errors	7 years ago
binding-invalid	add end position to errors	7 years ago
binding-invalid-on-element	add end position to errors	7 years ago
component-cannot-be-called-state	add end position to errors	7 years ago
component-slot-default-duplicate.skip	validation	7 years ago
component-slot-default-reserved	add end position to errors	7 years ago
component-slot-dynamic	add end position to errors	7 years ago
component-slot-dynamic-attribute	add end position to errors	7 years ago
component-slot-each-block	add end position to errors	7 years ago
component-slot-named-duplicate.skip	validation	7 years ago
component-slotted-each-block	add end position to errors	7 years ago
component-slotted-if-block	add end position to errors	7 years ago
computed-purity-check-no-this	add end position to errors	7 years ago
computed-purity-check-this-get	add end position to errors	7 years ago
css-invalid-global	add end position to errors	7 years ago
css-invalid-global-placement	add end position to errors	7 years ago
each-block-invalid-context	add end position to errors	7 years ago
each-block-invalid-context-destructured	add end position to errors	7 years ago
each-block-multiple-children	increase test coverage	7 years ago
empty-block-dev	add end position to warnings	7 years ago
empty-block-prod	increase test coverage, handle immediately-closed blocks	7 years ago
event-handler-ref	validate ref callees (#686)	7 years ago
event-handler-ref-invalid	add end position to errors	7 years ago
export-default-duplicated	add end position to errors	7 years ago
export-default-must-be-object	add end position to errors	7 years ago
helper-clash-context	add end position to warnings	7 years ago
helper-purity-check-needs-arguments	add end position to warnings	7 years ago
helper-purity-check-no-this	add end position to errors	7 years ago
helper-purity-check-this-get	add end position to errors	7 years ago
helper-purity-check-uses-arguments	enforce helper function purity	8 years ago
method-arrow-no-this	move tests around to facilitate registering babel based on environment	8 years ago
method-arrow-this	add end position to errors	7 years ago
method-nonexistent	add end position to warnings	7 years ago
method-nonexistent-helper	add end position to warnings	7 years ago
method-quoted	treat quoted property names the same way as identifiers - fixes #914	7 years ago
missing-component	add end position to warnings	7 years ago
named-export	Fix named-export end position	7 years ago
namespace-invalid	add end position to errors	7 years ago
namespace-invalid-unguessable	add end position to errors	7 years ago
namespace-non-literal	add end position to errors	7 years ago
non-object-literal-components	add end position to errors	7 years ago
non-object-literal-events	add end position to errors	7 years ago
non-object-literal-helpers	add end position to errors	7 years ago
non-object-literal-methods	add end position to errors	7 years ago
non-object-literal-transitions	add end position to errors	7 years ago
oncreate-arrow-no-this	move tests around to facilitate registering babel based on environment	8 years ago
oncreate-arrow-this	add end position to errors	7 years ago
ondestroy-arrow-no-this	move tests around to facilitate registering babel based on environment	8 years ago
ondestroy-arrow-this	add end position to errors	7 years ago
properties-components-should-be-capitalised	add end position to warnings	7 years ago
properties-computed-cannot-be-reserved	add end position to errors	7 years ago
properties-computed-must-be-an-object	add end position to errors	7 years ago
properties-computed-must-be-functions	add end position to errors	7 years ago
properties-computed-must-be-valid-function-names	add end position to errors	7 years ago
properties-computed-no-destructuring	add end position to errors	7 years ago
properties-computed-values-needs-arguments	add end position to errors	7 years ago
properties-data-must-be-function	add end position to errors	7 years ago
properties-duplicated	add end position to errors	7 years ago
properties-methods-getters-setters	add end position to errors	7 years ago
properties-unexpected	add end position to errors	7 years ago
properties-unexpected-b	add end position to errors	7 years ago
slot-attribute-invalid	add end position to errors	7 years ago
store-unexpected	add end position to warnings	7 years ago
svg-child-component-declared-namespace	move tests around to facilitate registering babel based on environment	8 years ago
svg-child-component-undeclared-namespace	add end position to warnings	7 years ago
tag-invalid	add end position to errors	7 years ago
tag-non-string	add end position to errors	7 years ago
textarea-value-children	add end position to errors	7 years ago
title-no-attributes	add end position to errors	7 years ago
title-no-children	add end position to errors	7 years ago
transition-duplicate-in	add end position to errors	7 years ago
transition-duplicate-in-transition	add end position to errors	7 years ago
transition-duplicate-out	add end position to errors	7 years ago
transition-duplicate-out-transition	add end position to errors	7 years ago
transition-duplicate-transition	add end position to errors	7 years ago
transition-duplicate-transition-in	add end position to errors	7 years ago
transition-duplicate-transition-out	add end position to errors	7 years ago
transition-missing	add end position to errors	7 years ago
transition-on-component	add end position to errors	7 years ago
unused-components	add end position to warnings	7 years ago
unused-event	add end position to warnings	7 years ago
unused-helper.skip	warn on unused events/transitions - fixes #1051	7 years ago
unused-transition	add end position to warnings	7 years ago
window-binding-invalid	add end position to errors	7 years ago
window-binding-invalid-innerwidth	add end position to errors	7 years ago
window-binding-invalid-value	add end position to errors	7 years ago
window-binding-invalid-width	add end position to errors	7 years ago
window-binding-online	enable <:Window bind:online/> - fixes #936 (#937)	7 years ago
window-event-invalid	add end position to warnings	7 years ago