In Vue, we often need to perform loop operations and match incoming parameters. This article will introduce you how to loop matching parameters in Vue.
Step 1: Define the component
First, we need to define a Vue component. Here we take the list component as an example. The code is as follows:
<template> <div> <ul> <li>{{ item.name }}</li> </ul> </div> </template> <script> export default { name: "List", props: { listData: { type: Array, required: true, }, }, data() { return { items: [], }; }, created() { this.items = this.listData; }, }; </script>
This component receives an array parameter named listData
and assigns it to items
for display. In the component, we can use Vue's directive v-for
to loop through rendering list data, and :key
to optimize performance and eliminate warnings.
Step 2: Pass in parameters
Next, we need to pass in parameters in the Vue instance. The code is as follows:
<template> <div> <list></list> </div> </template> <script> import List from "@/components/List"; export default { name: "App", components: { List, }, data() { return { data: [ { id: 1, name: "Apple" }, { id: 2, name: "Banana" }, { id: 3, name: "Orange" }, ], }; }, }; </script>
In the Vue instance, we introduce the List
component through import
and pass the data
array as a parameter to ## The listData
property of the #List component.
created life cycle. The code is as follows:
<template> <div> <list></list> </div> </template> <script> import List from "@/components/List"; export default { name: "App", components: { List, }, data() { return { data: [ { id: 1, name: "Apple" }, { id: 2, name: "Banana" }, { id: 3, name: "Orange" }, ], }; }, }; </script>In the template of the Vue instance, when we use the
List component, we add a search item
search and pass
Banana as parameters.
created life cycle of the
List component, we will use the
filter method to loop and match the incoming parameters. The specific code is as follows:
<script> export default { name: "List", props: { listData: { type: Array, required: true, }, search: { type: String, default: "", }, }, data() { return { items: [], }; }, created() { this.items = this.listData.filter((item) => item.name.includes(this.search) ); }, }; </script>In this code, we use the JavaScript array
filter method. By passing in a function, we can filter out the array items that meet the conditions. Here, we determine whether the
name attribute of the array item contains the incoming
search parameter. If it meets the conditions, we add it to the
items array. Ultimately, we will only display list items that meet the criteria.
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