{"id":6298,"date":"2023-01-07T12:29:58","date_gmt":"2023-01-07T04:29:58","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6298"},"modified":"2023-01-07T12:29:58","modified_gmt":"2023-01-07T04:29:58","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8node-js%e4%b8%ad%e7%9a%84events%e6%a8%a1%e5%a1%8a%e5%89%b5%e5%bb%ba%e4%ba%8b%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/node-js\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8node-js%e4%b8%ad%e7%9a%84events%e6%a8%a1%e5%a1%8a%e5%89%b5%e5%bb%ba%e4%ba%8b%e4%bb%b6\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Node.js\u4e2d\u7684Events\u6a21\u584a\u5275\u5efa\u4e8b\u4ef6"},"content":{"rendered":"

<\/p>\n

\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528 ‘events’ \u6a21\u5757\u521b\u5efa\u4e8b\u4ef6\uff1f<\/h1>\n

Node.js \u662f\u4e00\u500b\u5efa\u7acb\u5728 JavaScript \u57fa\u790e\u4e0a\u7684\u958b\u6e90\u3001\u8de8\u5e73\u53f0\u7684 JavaScript \u74b0\u5883\uff0c\u5b83\u53ef\u4ee5\u7528\u65bc\u958b\u767c\u670d\u52d9\u5668\u7aef\u61c9\u7528\u7a0b\u5e8f\u3002Node.js \u4e2d\u7684 ‘events’ \u6a21\u5757\u53ef\u4ee5\u7528\u4f86\u5275\u5efa\u4e8b\u4ef6\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u597d\u5730\u63a7\u5236\u7a0b\u5e8f\u7684\u6d41\u7a0b\u3002<\/p>\n

\u4ec0\u9ebc\u662f ‘events’ \u6a21\u5757\uff1f<\/h2>\n

‘events’ \u6a21\u5757\u662f Node.js \u4e2d\u7684\u4e00\u500b\u5167\u7f6e\u6a21\u5757\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u5275\u5efa\u4e8b\u4ef6\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u597d\u5730\u63a7\u5236\u7a0b\u5e8f\u7684\u6d41\u7a0b\u3002\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u5728\u7a0b\u5e8f\u4e2d\u6dfb\u52a0\u4e8b\u4ef6\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u4e8b\u4ef6\u767c\u751f\u6642\u57f7\u884c\u7279\u5b9a\u7684\u4ee3\u78bc\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 ‘events’ \u6a21\u5757\uff1f<\/h2>\n

\u4f7f\u7528 ‘events’ \u6a21\u5757\u5275\u5efa\u4e8b\u4ef6\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n

    \n
  1. \u9996\u5148\uff0c\u9700\u8981\u5f15\u5165 ‘events’ \u6a21\u5757\uff1a\n
    const events = require('events');<\/pre>\n<\/li>\n
  2. \u63a5\u4e0b\u4f86\uff0c\u5275\u5efa\u4e00\u500b ‘EventEmitter’ \u5c0d\u8c61\uff1a\n
    const emitter = new events.EventEmitter();<\/pre>\n<\/li>\n
  3. \u7136\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528 ‘on’ \u65b9\u6cd5\u4f86\u70ba\u4e8b\u4ef6\u7d81\u5b9a\u56de\u8abf\u51fd\u6578\uff1a\n
    emitter.on('eventName', (data) => {\n    \/\/ \u5728\u9019\u88e1\u57f7\u884c\u4e8b\u4ef6\u767c\u751f\u6642\u7684\u4ee3\u78bc\n});<\/pre>\n<\/li>\n
  4. \u6700\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528 ’emit’ \u65b9\u6cd5\u4f86\u767c\u51fa\u4e8b\u4ef6\uff1a\n
    emitter.emit('eventName', data);<\/pre>\n<\/li>\n<\/ol>\n
    \u7d93\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u5c31\u53ef\u4ee5\u5728 Node.js \u4e2d\u4f7f\u7528 ‘events’ \u6a21\u5757\u5275\u5efa\u4e8b\u4ef6\u4e86\u3002<\/p>\n
    \u7e3d\u7d50<\/h2>\n
    Node.js \u4e2d\u7684 ‘events’ \u6a21\u5757\u53ef\u4ee5\u7528\u4f86\u5275\u5efa\u4e8b\u4ef6\uff0c\u4e26\u4e14\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u597d\u5730\u63a7\u5236\u7a0b\u5e8f\u7684\u6d41\u7a0b\u3002\u4f7f\u7528 ‘events’ \u6a21\u5757\u5275\u5efa\u4e8b\u4ef6\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u9700\u8981\u5f15\u5165 ‘events’ \u6a21\u5757\u3001\u5275\u5efa\u4e00\u500b ‘EventEmitter’ \u5c0d\u8c61\u3001\u70ba\u4e8b\u4ef6\u7d81\u5b9a\u56de\u8abf\u51fd\u6578\uff0c\u4ee5\u53ca\u767c\u51fa\u4e8b\u4ef6\u5373\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Node.js\u4e2d\u7684Events\u6a21\u584a\u5275\u5efa\u4e8b\u4ef6\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u4f86\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528Events\u6a21\u584a\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[193,192],"tags":[191,190],"class_list":["post-6298","post","type-post","status-publish","format-standard","hentry","category-node","category-node-js","tag-node","tag-node-js"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1DA","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=6298"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6298\/revisions"}],"predecessor-version":[{"id":6299,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6298\/revisions\/6299"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=6298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=6298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=6298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}