Home > Article > Web Front-end > How vue.js traverses an array
Vue.js method of traversing arrays: 1. Use a foreach loop, the code is [this.urls.forEach(item =>]; 2. Use a filter loop, the code is [return this.urls.filter (item =>】.
vue.js method of traversing arrays:
1, foreach
search(keyword){ var newList = [] this.urls.forEach(item =>{ if(item.name.indexOf(keyword) != -1){ newList.push(item) } }) return newList }
2、filter
search(keyword){ return this.urls.filter(item =>{ if(item.name.includes(keyword)){ return item } }) }
3, findIndex
del(row){ this.$confirm("确定要删除吗?", "删除").then(action=>{ var index = this.urls.findIndex(item =>{ if(item.name == row.name){ return true; } }) this.urls.splice(index, 1) });
4, some
del(row){ this.$confirm("确定要删除吗?", "删除").then(action=>{ this.urls.some((item, i) =>{ if(item.name == row.name){ this.urls.splice(i, 1) return true; } }) }); }5. In the above example, in Store a fixed array in a vue data, traverse the array, implement search function, delete function In el-table: bind a method in data, and perform fixed array urls in the method Traverse and return a new array to implement the search function
<template> <div> <label style="float: left;"> 搜索关键字: <input type="text" class="form-control" v-model="keyword"> </label> <el-table :data="search(keyword)" size="small" :stripe="true" :border="true" @select="select" @select-all="select"> <el-table-column type="selection"></el-table-column> <el-table-column type="index"></el-table-column> <el-table-column label="网站名" prop="name" width="200"> <template slot-scope="slot"> <a href="slot.row.url" target="_blank">{{slot.row.name}}</a> </template> </el-table-column> <el-table-column label="网址" prop="url"></el-table-column> <el-table-column label="类型" prop="type" width="50"></el-table-column> <el-table-column label="国家" prop="country" width="50"></el-table-column> <el-table-column label="操作" width="50"> <template slot-scope="slot"> <el-button size="mini" type="text" icon="el-icon-delete" @click="del(slot.row)"></el-button> </template> </el-table-column> </el-table> <el-divider content-position="left">表格操作</el-divider> <el-button @click="batchDelete" type="danger" icon="el-icon-delete" size="small">批量删除</el-button> </div> </template> <script> export default { data() { return { keyword:'', selections: [], urls: [{ name: "新浪", url: "http://www.sina.com", type: "资讯", country: "中国" }, { name: "腾讯", url: "http://www.tencent.com", type: "聊天", country: "中国" }, { name: "谷歌", url: "http://www.google.com", type: "资讯", country: "美国" }, { name: "韬睿", url: "http://www.51i-star.com", type: "教育", country: "中国" } ] }; }, methods: { del(row){ this.$confirm("确定要删除吗?", "删除").then(action=>{ /* this.urls.some((item, i) =>{ if(item.name == row.name){ this.urls.splice(i, 1) return true; } }) */ var index = this.urls.findIndex(item =>{ if(item.name == row.name){ return true; } }) this.urls.splice(index, 1) }); }, select(selections, row) { this.selections = selections; }, batchDelete() { this.$confirm("确定要删除吗?", "删除") .then(action => { for (var i = this.urls.length - 1; i >= 0; i--) { for (var j = this.selections.length - 1; j >= 0; j--) { if (this.urls[i].name == this.selections[j].name) { this.urls.splice(i, 1); break; } } } }) .catch(error => { alert(error); this.$message('删除取消'); }); }, search(keyword){ /* var newList = [] this.urls.forEach(item =>{ if(item.name.indexOf(keyword) != -1){ newList.push(item) } }) return newList */ return this.urls.filter(item =>{ if(item.name.includes(keyword)){ return item } }) } } } </script> <style> </style>6. The rendering is
Related free learning recommendations:javascript(video)
The above is the detailed content of How vue.js traverses an array. For more information, please follow other related articles on the PHP Chinese website!