uniapp uses uview components to realize three-level linkage between provinces and municipalities (any three-level linkage)

<template> <view class=”invite”> <u-cell title=”Click to select” isLink :value=”value” @click=”change()”></u-cell> <u-picker :show=”show” ref=”uPicker” :columns=”columns” @confirm=”confirm” @cancel=”show=false” @change=”changeHandler” ></u-picker> </view> </template> <script> // import {<!– –> address } from ‘@/static/address.js’; export default {<!– –> data() {<!– –> return {<!– –> show: false, columns: [], origiData: [{<!– –> “code”: “110000”, “value”: “Beijing City”, “children”: [{<!– –> “code”: […]

Method to obtain map boundary data in real time in November 2023, multi-level linkage of provinces, cities, counties and streets [attached real-time geoJson data download]

First, let’s take a look at the renderings Online experience address: https://geojson.hxkj.vip, and provide real-time geoJson data file download The downloadable data includes provincial-level geojson administrative boundary data, municipal-level geojson administrative boundary data, district/county-level geojson administrative boundary data, provincial, city, and county street administrative code four-level linkage data (accurate to the township/street level), provincial Five-level […]

Left and right linkage provide, inject+props, emit

Achieve results Chengdu Big Screen – Video Management Both the left and right are components, so it involves the parent component passing data to multiple child components. Method 1 provide, inject Directory Structure Parent component index.vue Methods to pass data and modify data using provide import {<!– –> provide} from “vue”; provide(“Provide_SelectedVideo”, {<!– –> videoList, […]

POI implements Excel provincial and municipal three-level linkage java implementation

2003 version of Excel import java.io.FileOutputStream; import java.util.*; import com.google.common.collect.Lists; import org.apache.poi.hssf.usermodel.DVConstraint; import org.apache.poi.hssf.usermodel.HSSFDataValidation; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DataValidation; import org.apache.poi.ss.usermodel.DataValidationConstraint; import org.apache.poi.ss.usermodel.Name; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.ss.util.CellRangeAddressList; import org.apache.poi.util.IOUtils; /** * @ClassName: test3 * @Author: yongtao.ding on 2019/5/29 9:48 * @Version: 1.0 */ public class test3 { public […]

C++ Qt/VTK assembly forms a linkage connecting rod

Effect Key code #include “View3D.h” #include “Axis.h” #include <vtkActor.h> #include <vtkAppendPolyData.h > #include <vtkAreaPicker.h> #include <vtkAxesActor.h> #include <vtkBox.h> #include <vtkCamera.h> #include <vtkCaptionActor2D.h> #include <vtkCellArray.h> #include <vtkCleanPolyData.h> #include <vtkContourFilter.h> #include <vtkCubeSource.h> #include <vtkCylinder.h> #include <vtkCylinderSource.h> #include <vtkDataSet.h> #include <vtkGenericOpenGLRenderWindow.h> #include <vtkImplicitBoolean.h> #include <vtkInteractorStyleTrackballCamera.h> #include <vtkLine.h> #include <vtkMinimalStandardRandomSequence.h> #include <vtkNamedColors.h> #include <vtkObjectFactory.h> #include <vtkOrientationMarkerWidget.h> #include <vtkPlane.h> #include […]

.net coreyisha framework single page dual list linkage effect example

gridTable1 list data is the sub-data of gridTable’s other table data. When gridTable is clicked, gridTable1 list data is updated. @{ Layout = “~/Views/Shared/_Index.cshtml”; } <div class=”container-div”> <div class=”row”> <div id=”searchDiv” class=”col-sm-12 search-collapse”> <div class=”select-list”> <ul> <li> Contract name: <input id=”name” col=”name” type=”text” /> </li> <li> Signing time: <input id=”signDate” col=”signDate” type=”text” /> </li> <li> […]

Echarts world map and web table data interactive linkage

html layout: 1 <div class=”column”> 2 <div class=”panel bl bar1″> 3 <div class=”panelFooter”></div> 4 <h2>World epidemic data summary query</h2> 5 <div class=”map-table”> 6 <table align=”center” style=”margin:3px” cellspacing=”7px”> 7 <form id=”find_value”> 8 <label><font color=”#ff7f50″>Enter country:</font></label> 9 <input id=”cname” type=”text” name=”cname” placeholder=”” value=””> 10 <input type=”button” value=”Query” onclick=”find_res()”> 11 <input type=”reset” value=”Reset”> 12 </form> 13 <thead> 14 […]

ECharts chart linkage

1. Section overview When multiple charts are displayed together, sometimes the data between the charts are related. In this case, it is necessary to link the charts. For example, there is a map showing the sales of various regions in Henan Province (Eastern Henan, West Henan, South Henan, North Henan, and Central Henan), and there […]

Linkage between VRRP and BFD

Are you better today than you were yesterday? 1. Technologies commonly used in existing networks (vrrp and bfd) VRRP (Virtual Router Redundancy Protocol) is a network protocol used to improve the reliability and fault tolerance of routers. It allows multiple routers to share a virtual IP address, with one router acting as the main router […]