$emit executes before computed

emitted
vue test utils emitted
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vue/test-utils wrapper
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trigger method vue test

I'm trying to emit a prop that I modify. I can do that directly with the prop and it works but I get a Vue Warn: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders

So I tried to put the prop in a computed, but the emit executes before the computed is executed.

template:
          <input
                v-on:keyup="validatedate(localDate)"
                v-on:change="emitAnswer(localDate)"
                v-model="localDate">
 ,
 computed: {
    dateLocal: {
        get: function () {
            return this.date
        }
 }
 methods: {
     emitAnswer: function (date) {
        this.$emit('myFunc', date);
    }
 }

Since Vue can't guarantee that v-model will be executed before the v-on:change, you can use watchers to only call the emit once the value of the property has been changed in the component, example:

watch {
  date() {
     this.$emit('myFunc', this.date)
  }
}

$emit executes before computed, emit executes before computed - javascript. So I tried to put the prop in a computed, but the emit executes before the computed is executed. template: < input� Teams. Q&A for Work. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

Firstly, I believe your computed is named wrongly ("dateLocal" should be "localDate"), but I thing that is not the problem.

Why don´t you check inside method right before emit if value is set?

methods: {
    emitAnswer: function (date) {
        if (date) {
            this.$emit('myFunc', date)
        }
    }
}

Also, for better practise, you should use sethandler for computed property you are about to modify:

 computed: {
     localDate: {
         get () {
             return this.date
         },
         set (date) {
             if (date) {
                 this.$emit('myFunc', date)
             }
         }
     }
 }

Hopefully this helps you, feel free to respond if you need further help.

[Vue.js] $emit executes before computed, [Vue.js] $emit executes before computed. I'm trying to emit a prop that I modify. I can do that directly with the prop and it works but I get a vue.js� That is, the first argument is computed and placed on the stack, then the second argument, then the third, until all necessary arguments are atop the stack in descending order. The argument-building code sequence for an instance or virtual method must push that instance reference (which must not be a null reference) before any of the user

To avoid mutating a prop, it’s best to define a local data property that uses the prop as its initial value (source):

props: ['date'],
data () {
  return {
    localDate: this.date
  }
}

Now you can use the localDate data as v-model and you don't need any parameter for your emitAnswer method:

//template
  <input @change="emitAnswer" v-model="localDate">

//script
props: ['date'],
data () {
  return {
    localDate: this.date
  }
},
methods: {
  emitAnswer () {
    this.$emit('myFunc', this.localDate)
  }
}

Testing Emitted Events, Using the emitted API provided by vue-test-utils , we can easily see the emitted events. Run the test with yarn test:unit . PASS tests/unit/Emitter. Called before emitting assets. Should return a boolean telling whether to emit. Callback Parameters: compilation; compiler. hooks. shouldEmit. tap ('MyPlugin', (compilation) => {// return true to emit the output, otherwise false return true;}); emit. AsyncSeriesHook. Executed right before emitting assets to output dir. Callback Parameters: compilation; afterEmit

How to handle computed property based on .sync prop, The child component has input elements that emit the new values on is executed before 1) the new value is finished emitting up and getting� Suspending functions asynchronously returns a single value, but how can we return multiple asynchronously computed values? This is where Kotlin Flows come in. However, this computation blocks the main thread that is running the code. When these values are computed by asynchronous code we can mark

Computed Properties and Watchers — Vue.js, You have to look at it for a second before realizing that it displays message in return the previously computed result without having to run the function again. emit testSignal() should emit at least one int parameter. In addition, you should connect() before running your method. If your thread gets scheduled immediately you will miss all signals emitted before execution returns to your main thread. [quote author="p-himik" date="1322111612"]As i understand QMetaObject::invokeMethod() doesn't work either.

Communicating Events, selectedVariant = index } }, computed: { title() { return this.brand + ' ' + It means: when addToCart is run, emit an event by the name of “add-to-cart”. It looks just like it did before, but instead of only incrementing the value of cart by 1, now� 1929) studied conditions under which atoms that were part of a crystal would emit a gamma ray in such a way that the recoil would be spread over all the atoms making up the crystal. Mossbauer effect It has been calculated that 12 average-sized trees emit about the same volume of hydrocarbons in one day as a new car driven 30 miles.

Comments
  • I don't want to emit every time the user adds a character to the input. When the user either presses enter or left-clicks outside the inputfield the emit should be executed. This is handled by ´v-on:change´
  • @Amar then you can use keyup.enter or blur event.