<\/p>\n
Node.js \u662f\u4e00\u500b\u5f37\u5927\u7684 JavaScript \u57f7\u884c\u74b0\u5883\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u958b\u767c\u9ad8\u6548\u7684\u7db2\u7d61\u61c9\u7528\u7a0b\u5f0f\u3002Socket.IO \u662f\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90 JavaScript \u5eab\uff0c\u65e8\u5728\u7c21\u5316 Node.js \u4e2d\u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u96d9\u5411\u901a\u4fe1\u3002\u672c\u6587\u5c07\u5e36\u60a8\u6df1\u5165\u4e86\u89e3\u5982\u4f55\u5728 Node.js \u4e2d\u6709\u6548\u4f7f\u7528 Socket.IO\uff0c\u4ee5\u5be6\u73fe\u5be6\u6642\u4e92\u52d5\u3002<\/p>\n
\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88dd Socket.IO\uff0c\u9019\u53ef\u4ee5\u901a\u904e npm \u7c21\u55ae\u5b8c\u6210\uff1a<\/p>\n
“`bash
\nnpm install socket.io
\n“`<\/p>\n
\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u60a8\u53ef\u4ee5\u5728 Node.js \u61c9\u7528\u4e2d\u4f7f\u7528 Socket.IO\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
“`javascript
\nconst io = require(‘socket.io’)();
\n“`<\/p>\n
\u63a5\u4e0b\u4f86\uff0c\u8b93\u6211\u5011\u5efa\u7acb\u4e00\u500b Socket.IO \u4f3a\u670d\u5668\uff0c\u4e26\u8a2d\u7f6e\u76e3\u807d\u5ba2\u6236\u7aef\u7684\u9023\u63a5\u4e8b\u4ef6\uff1a<\/p>\n
“`javascript
\nio.on(‘connection’, (socket) => {
\n console.log(‘\u4e00\u4f4d\u7528\u6236\u5df2\u9023\u63a5’);
\n});
\n“`<\/p>\n
\u4f7f\u7528 `io.on()` \u65b9\u6cd5\u53ef\u4ee5\u8f15\u9b06\u76e3\u807d\u5ba2\u6236\u7aef\u7684\u9023\u63a5\u4e26\u57f7\u884c\u76f8\u61c9\u7684\u56de\u8abf\u51fd\u6578\u3002<\/p>\n
\u8981\u5411\u5ba2\u6236\u7aef\u767c\u9001\u8a0a\u606f\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 `socket.emit()` \u65b9\u6cd5\uff1a<\/p>\n
“`javascript
\nsocket.emit(‘message’, ‘Hello World!’);
\n“`<\/p>\n
\u5982\u679c\u60a8\u5e0c\u671b\u5411\u6240\u6709\u9023\u63a5\u7684\u5ba2\u6236\u7aef\u767c\u9001\u8a0a\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528 `io.emit()` \u65b9\u6cd5\uff1a<\/p>\n
“`javascript
\nio.emit(‘message’, ‘Hello World!’);
\n“`<\/p>\n
\u70ba\u4e86\u63a5\u6536\u5ba2\u6236\u7aef\u767c\u9001\u7684\u8a0a\u606f\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 `socket.on()` \u65b9\u6cd5\uff1a<\/p>\n
“`javascript
\nsocket.on(‘message’, (data) => {
\n console.log(data);
\n});
\n“`<\/p>\n
\u5982\u679c\u60a8\u9700\u8981\u63a5\u6536\u6240\u6709\u5ba2\u6236\u7aef\u767c\u9001\u7684\u8a0a\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528 `io.on()` \u65b9\u6cd5\uff1a<\/p>\n
“`javascript
\nio.on(‘message’, (data) => {
\n console.log(data);
\n});
\n“`<\/p>\n
\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528 Socket.IO \u5eab\u4f86\u5be6\u73fe\u5be6\u6642\u96d9\u5411\u901a\u4fe1\u3002Socket.IO \u7c21\u5316\u4e86\u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u4e92\u52d5\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u66f4\u8f15\u9b06\u5730\u69cb\u5efa\u5177\u6709\u5be6\u6642\u529f\u80fd\u7684\u61c9\u7528\u7a0b\u5f0f\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 `socket.emit()` \u548c `io.emit()` \u65b9\u6cd5\u767c\u9001\u8a0a\u606f\uff0c\u4e26\u4f7f\u7528 `socket.on()` \u548c `io.on()` \u65b9\u6cd5\u63a5\u6536\u8a0a\u606f\u3002<\/p>\n