express \ubaa8\ub4c8\uc740 \ucee4\ub9e8\ub4dc\ub77c\uc778\uc5d0\uc11c npm \uba85\ub839\uc5b4\ub85c \uc124\uce58 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\ube0c\ub77c\uc6b0\uc800 \uc8fc\uc18c\ub97c \ud1b5\ud574\uc11c \uc6f9\uc0ac\uc774\ud2b8\uc5d0 \uc811\uc18d \ud560 \ub54c \ub3c4\uba54\uc778 \uc8fc\uc18c \uc5d4\ub4dc \ud3ec\uc778\ud2b8\uc5d0 \ub530\ub77c \uc6f9\uc11c\ubc84\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0\uac8c \ub2e4\ub978 \ub0b4\uc6a9\uc744 \ubcf4\uc5ec \uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\uc608\ub97c \ub4e4\uc5b4\uc11c http:\/\/freelifemakers.org\/wordpress \ub77c\uace0 \ud55c\ub2e4\uba74 \uc774 ‘\/wordpress’ \ubd80\ubd84\uc744 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub77c\uace0 \ud569\ub2c8\ub2e4.
\ub2e4\ub978 \ub9d0\ub85c \ub77c\uc6b0\ud2b8 \ub610\ub294 \ub8e8\ud2b8\ub77c\uace0 \uc815\uc758 \ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.
\uc774\ub807\uac8c \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uc5d0 \ub530\ub77c \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0 \ub2e4\ub978 \uc751\ub2f5\uc744 \ud558\ub294 \uae30\ub2a5\uc744 \ub77c\uc6b0\ud305\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4.
express\ub294 \uc774\ub807\uac8c \ub77c\uc6b0\ud305 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uac8c \ud574\uc8fc\ub294 \ubaa8\ub4c8\uc774\ub77c\uace0 \uc0dd\uac01\ud558\uc2dc\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n
The express module can be installed with the npm command from the command line. 2.\ub77c\uc6b0\ud305(routing)<\/strong> -The yellow, green, and blue parts are all codes for express. 3.\uc804\uccb4\ucf54\ub4dc(full code)<\/strong> express \ubaa8\ub4c8\uc740 \ucee4\ub9e8\ub4dc\ub77c\uc778\uc5d0\uc11c npm \uba85\ub839\uc5b4\ub85c \uc124\uce58 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\ube0c\ub77c\uc6b0\uc800 \uc8fc\uc18c\ub97c \ud1b5\ud574\uc11c \uc6f9\uc0ac\uc774\ud2b8\uc5d0 \uc811\uc18d \ud560 \ub54c \ub3c4\uba54\uc778 \uc8fc\uc18c \uc5d4\ub4dc \ud3ec\uc778\ud2b8\uc5d0 \ub530\ub77c \uc6f9\uc11c\ubc84\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0\uac8c \ub2e4\ub978 \ub0b4\uc6a9\uc744 \ubcf4\uc5ec \uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\uc608\ub97c \ub4e4\uc5b4\uc11c http:\/\/freelifemakers.org\/wordpress \ub77c\uace0 \ud55c\ub2e4\uba74 \uc774 ‘\/wordpress’ \ubd80\ubd84\uc744 \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub77c\uace0 \ud569\ub2c8\ub2e4. \ub2e4\ub978 \ub9d0\ub85c \ub77c\uc6b0\ud2b8 \ub610\ub294 \ub8e8\ud2b8\ub77c\uace0 \uc815\uc758 \ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub807\uac8c \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uc5d0 \ub530\ub77c \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0 \ub2e4\ub978 \uc751\ub2f5\uc744 \ud558\ub294 \uae30\ub2a5\uc744 \ub77c\uc6b0\ud305\uc774\ub77c\uace0 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-462","post","type-post","status-publish","format-standard","hentry","category-nodejs","missing-thumbnail"],"_links":{"self":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=462"}],"version-history":[{"count":5,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/462\/revisions"}],"predecessor-version":[{"id":468,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/462\/revisions\/468"}],"wp:attachment":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
When you access a website through a browser address, depending on the domain address endpoint, the web server can show the client different content.
For example, if it’s http:\/\/freelifemakers.org\/wordpress , this ‘\/wordpress’ part is called an endpoint.
In other words, it can be defined as a route.
The ability to respond differently to clients depending on the endpoint is called routing.
You can think of express as a module that allows you to use routing capabilities like this.
1.\uc124\uce58\ubc29\ubc95(Installation) <\/strong>
-js\ud30c\uc77c \ub514\ub809\ud1a0\ub9ac\ub85c \uc774\ub3d9\ud574\uc11c \ucee4\uba58\ub4dc\ub77c\uc778\uc5d0\uc11c \ub2e4\uc74c\uacfc \uac19\uc774 \uc785\ub825\ud569\ub2c8\ub2e4.
-Go to the js file directory and enter the following on the command line.<\/p>\n\n\n\n\n#npm install express<\/code><\/pre>\n\n\n\n
-\ub178\ub780\uc0c9,\ub179\uc0c9,\ud30c\ub780\uc0c9 \ubd80\ubd84\uc740 \ubaa8\ub450 express\ub97c \uc704\ud55c \ucf54\ub4dc \uc785\ub2c8\ub2e4.
-\ub178\ub780\uc0c9\uc740 \ubaa8\ub4c8 \ud3ec\ud568 \uc2dc\ud0a4\ub294 \ubd80\ubd84\uc774\uace0,\ub179\uc0c9\uacfc \ud30c\ub791 \uc0c9\uc740 get\ubc29\uc2dd(\ube0c\ub77c\uc6b0\uc800 \uc8fc\uc18c\ud45c\uc2dc\uc904)\uc744 \ud1b5\ud55c \uc811\uadfc\uc5d0 \ub300\ud55c \ubd80\ubd84\uc785\ub2c8\ub2e4.
-\ub178\ub780\uc0c9 \ud654\uc0b4\ud45c\ud568\uc218\uc640 \ud558\ub298\uc0c9 \uae30\uc874 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ud568\uc218\uac00 \ubaa8\ub450 \uc0ac\uc6a9 \uac00\ub2a5 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
-The yellow color is the part that includes the module, and the green and blue colors are the part for access through the get method (browser address bar).
-Both yellow arrow functions and light blue existing JavaScript type functions are available.<\/p>\n\n\n\n
1)app.get(‘\/’, (req, res) => {}<\/strong>
http:\/\/freelifemakers.org \ub610\ub294 http:\/\/localhost \ucc98\ub7fc \uc811\uc18d\ud588\uc744 \ub54c \ubcf4\uc5ec\uc904 \ub0b4\uc6a9\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.
Set the content to be displayed when accessed, such as http:\/\/freelifemakers.org or http:\/\/localhost.
2)app.get(‘\/about’,(req, res) => {}<\/strong>
http:\/\/freelifemakers.org\/about \ub610\ub294 http:\/\/localhost\/about \ucc98\ub7fc \uc811\uc18d\ud588\uc744 \ub54c \ubcf4\uc5ec\uc904 \ub0b4\uc6a9\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.
Set the content to be displayed when accessed, such as http:\/\/freelifemakers.org\/about or http:\/\/localhost\/about.
3)app.get(‘\/random.text’, function (req, res) {}<\/strong>
http:\/\/freelifemakers.org\/random.text \ub610\ub294 http:\/\/localhost\/random.text \ucc98\ub7fc \uc811\uc18d\ud588\uc744 \ub54c \ubcf4\uc5ec\uc904 \ub0b4\uc6a9\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.
Set the content to be displayed when accessed, such as http:\/\/freelifemakers.org\/random.text or http:\/\/localhost\/random.text.<\/p>\n\n\n\n
<\/p>\n\n\n\n\/\/server_ex.js\nconst http = require('http');\nconst express = require('express');\nconst app = express();\nconst server = http.createServer(app);<\/mark>\n\n\/\/routing\napp.get('\/',(req, res)<\/mark> => {\n res.writeHead(200, { 'Content-Type': 'text\/plain' });\n res.end('Express Hello World!\\n');\n});\n\napp.get('\/about',(req, res)<\/mark> => {\n res.writeHead(200, { 'Content-Type': 'text\/plain' });\n res.end('Express About!\\n');\n}); \n\napp.get('\/random.text', function (req, res)<\/mark> {\n res.send('Express random.text');\n});\n\n\/\/ Start the server\nconst PORT = process.env.PORT || 3000;\nserver.listen(PORT, () => {\n console.log(`CommonJS(Express) Server is running on port ${PORT}`);\n});\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"