ComboBox template component using VueJS

Question

我想使用 vuejs v3 制作一个 Combobox 模板组件，为此我有以下代码：

<template>
    <select name={{selector_name}} class= "combobox" id={{selector_id}}>
        v-for=opt in {{selector_options}} 
        <option value=opt>
            opt
        </option>
    </select>
</template>

<script>
export default {
    name: 'ComboBox',
    data() {
        return {
            selector_name: null,
            selector_id: null,
            selector_options : null,
        }
    },
    props: {
        selector_name: {
            type: String,
            required: true
        },
        selector_id: {
            type: String,
            default: "combobox"
        },
        selector_options: {
            type: Array,
            required: true
        }
    },
    methods: {
        onChange: (event) => {
            console.log(event.target.value);
        },
    },
    computed: {},
}
</script>

但是我使用 v-for 的方式对我来说似乎不正确，你能告诉我如何纠正吗？提前致谢。

Answer 1

I see a lot of stuff, to answer your question clearly, v-for is used on elements.

<template>
    // For mor readability i recommend you do bind your property:
    //  - name={{selector_name}} become :name="selector_name"
    <select :name="selector_name" class= "combobox" :id="selector_id">
        <!-- v-for is required with a unique key, you can take the index and use it -->
        <option v-for="(opt, index) in selector_options" :key="`opt ${index}`" value=opt>
           {{ opt }}
        </option>
    </select>
</template>

You cannot define props and data with the same name. Props, inject properties and values ​​into the data. Exactly the same, but the data comes from the parent and you pass values ​​from the parent to the child.

So if you need to pass data, use props, but don't define it inside the data.

There is a working example of all of this (I'm using data instead of props to improve readability).