How to use the effectScope function from vue

Find comprehensive JavaScript vue.effectScope code examples handpicked from public code repositorys.

vue.effectScope is a function in Vue.js that allows you to create an isolated effect scope for handling reactivity effects in a more predictable manner.

vuex.cjs.js

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var computedObj = {};
var computedCache = {};

// create a new effect scope and create computed object inside it to avoid
// getters (computed) getting destroyed on component unmount.
var scope = vue.effectScope(true);

scope.run(function () {
  forEachValue(wrappedGetters, function (fn, key) {
    // use computed to leverage its lazy-caching mechanism

+ 21 other calls in file

composables.js

GitHub: w781223592/vue2.0-note

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  throwNoCurrentInstance('useRoute')
}

var root = vue.getCurrentInstance().proxy.$root
if (!root._$route) {
  var route = vue.effectScope(true).run(function () { return vue.shallowReactive(Object.assign({}, root.$router.currentRoute)) }
  )
  root._$route = route

  root.$router.afterEach(function (to) {

+ 4 other calls in file

How does vue.effectScope work?

vue.effectScope is a function that creates a new effect scope, which is a separate reactive context for running reactive effects in Vue.js applications, allowing fine-grained control over the execution of reactive code. Effect scopes provide the ability to track dependencies and perform clean-up of reactive code on-demand, resulting in better performance and more predictable behavior of the application. The function creates an effect scope and returns an object with methods to create and manage reactive effects in the scope. The effects created within a scope only trigger reactivity updates within that scope, allowing for isolation of reactive code and improving performance.

Ai Example

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import { effectScope } from "vue";

// create a new effect scope
const scope = effectScope();

// create an effect within the scope
const effect = scope.run(() => {
  // ... do some reactive stuff ...
});

// stop the effect
effect.stop();

// dispose of the scope
scope.dispose();

In this example, effectScope is used to create a new effect scope. scope.run() is used to run a reactive function within the scope, and effect.stop() is used to stop the effect. Finally, scope.dispose() is used to dispose of the scope.

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