computed-properties

问题 I can't get a computed property to update, when a nested property in a passed prop object is changed. this.favourite is passed via props, but the computed property is not updating when this.favourite.selectedChoices.second.id and this.favourite.selectedChoices.first.id is changed. Any ideas of how to make this reactive? Here's the computed property: isDisabled() { const hasMultipleChoices = this.favourite.choices.length ? this.favourite.choices[0].value.some(value => value.choices.length) :

问题 I'm having trouble understanding how to get a computed property all the way out through the router to my template. Here's a basic idea of what I'm doing: const Home = { template: '<router-link to="/level/1">Level 1</router-link>' } const Level = { template: '<template>|{{ id }}|{{ message }}|</template>', props: ['id','message'] } const router = new VueRouter({ routes: [ { path: '/', component: Home, props: true }, { path: '/level/:id', component: Level, props: true } ] }) const vm = new Vue(

来源： https://stackoverflow.com/questions/62819916/computed-property-set-not-called-in-vue

来源： https://stackoverflow.com/questions/62819916/computed-property-set-not-called-in-vue

问题 I try to filter my list with 2 select lists based on the selected value. It seems like my computed filter is not working? You should be able to filter the list on 'Price from' and 'Price to' List.vue My computed filter property: filteredData() { const LowerCaseSearch = this.search.toLowerCase(); return this.products.filter( product => (product.name.toLowerCase().includes(LowerCaseSearch) || product.category.toLowerCase().includes(LowerCaseSearch)) && (!this.checked.length || this.checked

问题 I have a simple form in VueJS that I would like to have a computed property for one of the form fields. I would like the computed property to be calculated as the user inputs data and then saved as a data property before submitting the form to the server. <form> <div> <h3>Revenue</h3> <input type="text" v-model="formData.revenue"> </div> <div> <h3>Expenses</h3> <input type="text" v-model="formData.expenses"> </div> <div> <h3>Operating Income</h3> <input type="text" v-model="formData

问题 I have a simple form in VueJS that I would like to have a computed property for one of the form fields. I would like the computed property to be calculated as the user inputs data and then saved as a data property before submitting the form to the server. <form> <div> <h3>Revenue</h3> <input type="text" v-model="formData.revenue"> </div> <div> <h3>Expenses</h3> <input type="text" v-model="formData.expenses"> </div> <div> <h3>Operating Income</h3> <input type="text" v-model="formData

问题 I have a simple form in VueJS that I would like to have a computed property for one of the form fields. I would like the computed property to be calculated as the user inputs data and then saved as a data property before submitting the form to the server. <form> <div> <h3>Revenue</h3> <input type="text" v-model="formData.revenue"> </div> <div> <h3>Expenses</h3> <input type="text" v-model="formData.expenses"> </div> <div> <h3>Operating Income</h3> <input type="text" v-model="formData

问题 I made a BlogList.vue component which list all the blog teasers. I made a search box in the BlogList.vue component: <input type="text" placeholder="Enter key word" v-model="search"> With a computed property I build the search filter based on what the user types in the search field: computed: { getfilteredData() { return this.experiences.filter(experience => experience.name.toLowerCase().includes( this.search.toLowerCase() ) ) } }, This all works fine. But I like to move the search box to a

问题 I made a BlogList.vue component which list all the blog teasers. I made a search box in the BlogList.vue component: <input type="text" placeholder="Enter key word" v-model="search"> With a computed property I build the search filter based on what the user types in the search field: computed: { getfilteredData() { return this.experiences.filter(experience => experience.name.toLowerCase().includes( this.search.toLowerCase() ) ) } }, This all works fine. But I like to move the search box to a