JS judges whether the user opens the console
Determine whether the user F12 to open the console
Web
Three simple ways to center CSS Div
Three methods of CSS DIV centering
Detailed WebSocket
WebSockets is a transport layer built on top of the device's TCP/IP stack. The purpose is to provide web application developers with a TCP communication layer that is as close to the original as possible in nature, while adding some abstractions to eliminate some differences
uniapp onLaunch executes onLoad after obtaining openid
When developing a front-end project with uni-app, you will encounter the need to request the interface to return the result in onLaunch, and this result may be used in the onLoad of each page of the project. For example, the WeChat applet is obtained after logging in in onLaunch openid and get the token, each page of the project needs to bring the token to request other interfaces
Use window.onerror() to catch global JS errors
Did you know that you can use window.error to catch and report global JavaScript errors?
Simple lazy loading of the web
Usually we need to write JavaScript to handle lazy loading of images, usually in the form of a scroll handler or a cross-viewer
HTML5 video picture-in-picture mode
The native picture-in-picture API allows you to create a floating, fixed HTML5 video overlaid on your workspace. This API is seamlessly integrated into the HTMLVideoElement interface and is super easy to use
3 unusual but useful HTML elements
Share unpopular and easy-to-use HTML tags
How to implement dark mode using CSS and 3 lines of simple Javascript
A must-have feature for most modern websites and web applications is the ability to switch the theme of the website from light mode to dark mode. This feature has gradually become a fashionable supplement to the modern web, and I know how to deal with future projects or existing When implementing it in a project, it will undoubtedly come in handy to implement it
How to build your own Chrome extension?
Ever wondered how to build your own Chrome extension? It's not as hard as you think