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1原创 vue中pdf预览，报错（Cannot read properties of undefined (reading ‘catch‘)）解决
vue中pdf预览，报错（Cannot read properties of undefined (reading ‘catch‘)）解决
2022-11-29 16:50:50
5155
原创 bus.js
创建bus.js文件// bus.js文件内容import Vue from 'vue'const Bus = new Vue()export default Bus全局引入bus.jsimport Bus from '@/api/bus'Vue.prototype.$bus = Bus局部引入import Bus from '@/api/bus'a组件中this.$bus.$emit("busEvent");b组件中接收mounted: function..
2022-04-12 17:06:17
1143
原创 关于async ,await,promise执行顺序
async function async1(){ console.log('async1 start') //2 await async2() console.log('async1 end') //6 } async function async2(){ console.log("async2") //3 } console.lo...
2022-03-24 17:28:30
111
原创 element 日期开始结束时间限制
<el-form-item label="开始时间"> <el-date-picker v-model="formData.startTime" type="date" :picker-options="startTimeOptions" format="yyyy-MM-dd" value-format=...
2022-03-24 11:28:05
299
原创 图片裁剪vue-cropper使用
安装：npm install vue-cropper<el-upload ref="upload" class="avatar-uploader" accept=".jpg,.jpeg,.png,.gif" action="" ...
2022-03-24 11:11:04
1797
原创 element的message同时只弹一个框
let doms=document.getElementsByClassName('el-message')[0]if(doms==undefined){ this.$message({ message: "", type: "error", offset: 300, dur...
2022-03-24 10:42:11
272
原创 element浏览器返回时，导航高亮显示对应页面
<el-menu class="el-menu-vertical-demo" :unique-opened="uniqueopened" :default-active="activePathFn" :collapse-transition="collapse_transition" :collapse="isCollapse"> </el-menu>...
2022-03-24 10:29:35
239
原创 axios终止请求
1.单个请求终止import axios from 'axios'data() { return { cancelPending:null } },const CancelToken = axios.CancelToken;axios.get(url, { cancelToken: new CancelToken((c)=> this.cancelP...
2022-03-24 10:21:05
3266
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