1、foreach
foreach循环对不能使用return来停止循环
- 1 search(keyword){
- 2 var newList = []
- 3 this.urls.forEach(item =>{
- 4 if(item.name.indexOf(keyword) != -1){
- 5 newList.push(item)
- 6 }
- 7 })
- 8 return newList
- 9 }
2、filter
item对象就是遍历数组中的一个元素,includes是es6中的新方法,在search方法中直接返回新数组
- 1 search(keyword){
- 2 return this.urls.filter(item =>{
- 3 if(item.name.includes(keyword)){
- 4 return item
- 5 }
- 6 })
- 7 }
3、findIndex
返回true后index就可以获取到匹配的元素在进行删除
- del(row){
- this.$confirm("确定要删除吗?", "删除").then(action=>{
- var index = this.urls.findIndex(item =>{
- if(item.name == row.name){
- return true;
- }
- })
- this.urls.splice(index, 1)
- });
4、some
如果匹配成功就return true跳出some的循环
- del(row){
- this.$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、上例子,在一个vue的data中存入一个固定的数组,对数组进行遍历,实现搜索功能,删除功能
在el-table中 :data中绑定一个方法,方法中对固定的数组urls进行遍历,返回一个新的数组实现搜索功能
- <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、效果图为
