components

问题 I have a dropdown as is shown in the following image: When I click the folder icon it opens and closes because showingProjectSelector property in the state that is set to false. constructor (props) { super(props) const { organization, owner, ownerAvatar } = props this.state = { owner, ownerAvatar, showingProjectSelector: false } } When I click the icon, it opens and closes properly. <i onClick={() => this.setState({ showingProjectSelector: !this.state.showingProjectSelector })} className='fa

问题 When I added the SelectionChanged event and of course the method in the code to handle the event to the following combobox: .... <ComboBox Name="OrderBox" HorizontalAlignment="Left" SelectionChanged="OrderBox_OnSelectionChanged"> <ComboBoxItem Margin="4,4,4,4" IsSelected="True">Por Nombre (A - Z)</ComboBoxItem> <ComboBoxItem Margin="4,4,4,4">Por Nombre (Z - A)</ComboBoxItem> <ComboBoxItem Margin="4,4,4,4">Por Apellido (A - Z)</ComboBoxItem> <ComboBoxItem Margin="4,4,4,4">Por Apellido (Z - A)<

问题 I can't seem to figure out how to make components work. Without the component it works fine (the commented code). Here's my HTML: <strong>Total Price:</strong> <span v-text="total"></span><br> <strong>CPC:</strong> <span v-text="cpc"></span> Here's my Vue.js code: Vue.component('my-component', { // data: function() { // return { interval: 0, exposure: 0, clicks: 0, total: 0, cpc: 0 } // }, computed: { total: function () { return(this.clicks * (this.exposure * 0.001 / 10) / 700).toFixed(8) },

问题 I'm working in a project with vue 2. I need to know in which case the performance is better: Use v-if or v-show?. I have a long list and each item's list has a form hidden that I need show and hide to click a button that has each item list. What is better a toggle class of v-show or add and remove the form with v-if? 回答1: tl;dr Assuming the question is strictly about performance: v-show : expensive initial load, cheap toggling, v-if : cheap initial load, expensive toggling. Evan You provided

问题 I have one button, i want to apply a default style of a button and when user click on a button change a button style color to red and background-color to white. Blow is my .css and component. .btn-default { color: white; background-color: blue; } .btn-change { color: Red; background-color: white; } Component.ts import { Component } from '@angular/core'; @Component({ selector: 'app-root', templateUrl: './app.component.html', styleUrls: ['./app.component.css'] }) export class AppComponent {

问题 I have one button, i want to apply a default style of a button and when user click on a button change a button style color to red and background-color to white. Blow is my .css and component. .btn-default { color: white; background-color: blue; } .btn-change { color: Red; background-color: white; } Component.ts import { Component } from '@angular/core'; @Component({ selector: 'app-root', templateUrl: './app.component.html', styleUrls: ['./app.component.css'] }) export class AppComponent {

问题 I have been working on a Real Estate project and I've got stuck on adding a reactcomponent inside a markers popup. The image below shows the example of how the popup should look like: Popup example This is the code where I am trying to add the popup on the marker: var card = <Card /> var popup = new mapboxgl.Popup({ offset: 25 }) .setDOMContent(ReactDOM.render(card, document.getElementById('map'))) var marker = new mapboxgl.Marker(el) .setLngLat(coordinates) .setPopup(popup) .addTo(map);

问题 I have been working on a Real Estate project and I've got stuck on adding a reactcomponent inside a markers popup. The image below shows the example of how the popup should look like: Popup example This is the code where I am trying to add the popup on the marker: var card = <Card /> var popup = new mapboxgl.Popup({ offset: 25 }) .setDOMContent(ReactDOM.render(card, document.getElementById('map'))) var marker = new mapboxgl.Marker(el) .setLngLat(coordinates) .setPopup(popup) .addTo(map);

问题 I'm building a react-leaflet wrapper for my leaflet plugin leaflet-arrowheads. Its a component that I want people to be able to install as an npm package, import, and use. The component is simple: import React from 'react' import { Polyline } from 'react-leaflet' import 'leaflet-arrowheads' class ArrowheadsPolyline extends React.Component{ componentDidMount(){ const polyline = this.polylineRef.leafletElement if (this.props.arrowheads){ polyline.arrowheads(this.props.arrowheads) polyline.

问题 I'm building a react-leaflet wrapper for my leaflet plugin leaflet-arrowheads. Its a component that I want people to be able to install as an npm package, import, and use. The component is simple: import React from 'react' import { Polyline } from 'react-leaflet' import 'leaflet-arrowheads' class ArrowheadsPolyline extends React.Component{ componentDidMount(){ const polyline = this.polylineRef.leafletElement if (this.props.arrowheads){ polyline.arrowheads(this.props.arrowheads) polyline.