Programmer Group

The following are the summary of MOOC online courses https://www.imooc.com/video/3179 eg1: element attribute value with px // Think about whether you can use the binomial operator to say a sentence directly function getStyle(obj, attr) { // IE if (obj.currentStyle) { ret ...

Premise: we need to understand the common map services WMS, WMTS, WFS, etc. for this article, we mainly understand WMS services and their GetCapabilities, GetMap, GetFeatureInfo operations. Note: This article focuses on ol.source.Image 1. How do we use( Official website example http://openlayers.org/en/v4.6.5/examples/w ...

DSkin encapsulates the Web UI development mode to develop desktop applications, which is very convenient to use Vue. It's a little like WPF   Let's use element UI as a simple example.   Operation effect; you can change the layout effect according to your own needs.   Element UI template code of main framework   <div id="page" class="shadow ...

Basic selector Universal selector * all id selector Class selector.class Label selector label name Group selector one,.two union The intersection of compound selector div and one Descendant or descendant selector Offspring selector > Direct child Descendant selectors spaces all descendants All ...

Extract this note from: https://www.cnblogs.com/solan/archive/2012/08/01/CSharp06.html And record the learning process for future reference. Summary: Abstract class: A special class that can define methods with implementation or method contracts that are not implemented. It cannot be instantiated by itself but can only be instantiated in a deri ...

1. Basic introduction of agent mode Proxy mode provides a surrogate for an object to control its access.That is, the target object is accessed through the proxy mode.The advantage of this is that on the basis of the implementation of the target object, additional functional operations can be enhanced, that is, to extend the function of the ta ...

Create ref Use React.createRef() to create refs and get the React element through the ref attribute. class MyComponent extends React.Component { constructor(props) { super(props); this.myRef = React.createRef(); } render() { return <div ref={this.myRef} />; } } Visit Refs When a ref attribute is pa ...

3 Minutes Society.NET Core Jwt Policy Authorization Certification I. Preface # Hello, I'm back. A few days ago I talked about the simplest case of Jwt authentication, but it's not powerful enough for real projects. Yes, in a real complex and demanding customer, we're at a loss. Now we need to make the certification authorization more complex a ...

Demand scenario: Select a product and display the different attributes of all stores. Each ul represents a store, and each line of li represents an attribute The effect is as follows: Click to display all: After clicking the hide the same item button: Solution: Hide button implementation: Traversing ul, t ...

If the UI gives us a design size of 750 * 1340. Combined with the dynamic font size attribute, design draft size and collaboration process between the front end and design on the html element of the home page of Netease and Taobao mobile terminal, they are generally divided into the following two types: 1. Netease practice: ...