WebSocket and EventSource are two commonly used technologies for real-time data transmission, and they play an important role in Web development. This article will introduce in detail how to use these two technologies to implement server-side push, and provide corresponding JavaScript source code examples.
WebSocket is a full-duplex communication protocol that allows a persistent connection between the client and the server to achieve real-time two-way communication. Compared with traditional HTTP requests, WebSocket can achieve low-latency data exchange between the client and the server. The following is sample code for implementing server-side push using WebSocket:
// 创建WebSocket连接
const socket = new WebSocket('ws://example.com/socket');
// 连接建立时触发
socket.onopen = function