Question

请帮忙！我有'未定义＆＃39;儿童模板中的道具。

主要的js：

// some code before
window.Vue = require('vue');
import EventBus from '../components/event-bus';
// some code after

Vue.component('calendar-select', require('../components/admin/calendar_select.vue'));

const app = new Vue({
    el: '#app',
    data: function() {
        return {
            isActiveCalendar: true
        }
    },
    methods: {
        toggleCalendar() {
            this.isActiveCalendar = !this.isActiveCalendar;
        }
    },
    mounted() {
        EventBus.$on('toggleCalendar', this.toggleCalendar);
    }
});

在此之后我创建了这样的模板：

<template>
        <div class="custom-select" v-bind:class="{ active: isActiveCalendar}" >
            <div class="box flex" v-on:click="toggleCalendar" >
                <span>Calendar</span>
                <img src="/assets/img/admin/arrow-down.png" alt="#">
            </div>
        </div>
    </div>
</template>

<script>
import EventBus from '../event-bus';
export default 
{
// ------- start
    props: ['isActiveCalendar'],
    data: function() {
        return {
        }
    },
    methods: {
        toggleCalendar: function(event) {
            console.log(this.isActiveCalendar)
            EventBus.$emit('toggleCalendar');
        }
    }
// ------- end
}
</script>

当我在 this.isActiveCalendar 上执行 console.log 时，该变量未定义，并且在Chrome的Vue插件中也是如此。

请告诉我，我在做什么错误！

谢谢！

Answer 1

如documentation所述，用于传递道具。

HTML attributes are case-insensitive, so when using non-string templates, camelCased prop names need to use their kebab-case (hyphen-delimited) equivalents:

在此示例中，您需要使用

<calendar-select v-bind:is-active-calendar="isActiveCalendar"></calendar-sele‌ct>

以便将变量的值传递给prop。

vue 2道具未定义

1 个答案: