quasar/dist/api/Mutation.json

Build high-performance VueJS user interfaces (SPA, PWA, SSR, Mobile and Desktop) in record time

{"type":"directive","meta":{"docsUrl":"https://v2.quasar.dev/vue-directives/mutation"},"value":{"type":["Function"],"desc":"Function to call when mutation occurs; It is HIGHLY recommended to reference it from your vue component scope, otherwise the directive update cycle will continuously recreate the observer which hits performance hard","examples":["# v-intersection=\"myHandler\""],"returns":{"type":"Boolean","desc":"If you return Boolean false from the handler, the observer stops"},"params":{"mutationList":{"type":"Array","desc":"Array of MutationRecord items","definition":{"type":{"type":"String","desc":"Type of mutation","values":["'childList'","'attributes'","'characterData'"]},"target":{"type":"Element","desc":"The DOM element that the mutation affected, depending on the mutation type"},"addedNodes":{"type":"Array","desc":"The NodeList of the nodes that have been added"},"removedNodes":{"type":"Array","desc":"The NodeList of the nodes that have been removed"},"previousSibling":{"type":"Object","desc":"The previous sibling of the added or removed nodes, or null"},"nextSibling":{"type":"Object","desc":"The next sibling of the added or removed nodes, or null"},"attributeName":{"type":"String","desc":"The local name of the changed attribute, or null","examples":["'some-attribute'"]},"attributeNamespace":{"type":"String","desc":"The namespace of the changed attribute, or null"},"oldValue":{"type":"String","desc":"Value depends on the mutation type; For attributes, it is the value of the changed attribute before the change; For characterData it is data of the changed node before the change; For childList it is null; Note that for this to work as expected, attributeOldValue or characterDataOldValue must be set"}}}}},"modifiers":{"once":{"type":"Boolean","desc":"Call handler only once, when the first mutation was triggered, then stop monitoring","examples":["# v-mutation.once"]},"childList":{"type":"Boolean","desc":"Monitor the target node (and, if 'subtree' is also set, its descendants) for the addition of new child nodes or removal of existing child nodes","examples":["# v-mutation.childList"]},"subtree":{"type":"Boolean","desc":"Extend monitoring to the entire subtree of nodes rooted at target","examples":["# v-mutation.subtree"]},"attributes":{"type":"Boolean","desc":"Watch for changes to the value of attributes on the node or nodes being monitored","examples":["# v-mutation.attributes"]},"characterData":{"type":"Boolean","desc":"Monitor the specified target node or subtree for changes to the character data contained within the node or nodes","examples":["# v-mutation.characterData"]},"attributeOldValue":{"type":"Boolean","desc":"Record the previous value of any attribute that changes when monitoring the node or nodes for attribute changes","examples":["# v-mutation.attributeOldValue"]},"characterDataOldValue":{"type":"Boolean","desc":"Record the previous value of a node's text whenever the text changes on nodes being monitored","examples":["# v-mutation.characterDataOldValue"]}}}