-
-
Save algotrader-dotcom/fe644ebaae38dbdd2642 to your computer and use it in GitHub Desktop.
NodeJS web server that accepts a querystring variable in the URL and stores the new name in local variable
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /************************************************ | |
| FILENAME | |
| server_querystring.js | |
| DESCRIPTION | |
| creates a web server that | |
| display "Hello Dynamic World Wide Web" | |
| it includes a web form to accept a new name from the user via the querystring and displays it. | |
| the new name will be stored in a local variable 'defaultName'. | |
| HOW TO START SERVER: | |
| 1) from terminal run 'node server_querystring.js' | |
| 2) open web browser visit http://127.0.0.1:8080 | |
| *************************************************/ | |
| // Include the HTTP Node library | |
| // http://nodejs.org/docs/latest/api/http.html | |
| var http = require('http'); | |
| var url = require("url"); | |
| // define the | |
| var localIP = "127.0.0.1"; // 127.0.0.1 is used when | |
| var port = 8080; | |
| var defaultName = "Dynamic World Wide Web"; | |
| var server = http.createServer(function (req, res) { | |
| // Print to terminal that server has been requested | |
| console.log("We've got a request on " + req.url); | |
| /********************************************/ | |
| /* GET DATA FROM THE URL'S QUERYSTRING */ | |
| /********************************************/ | |
| // Get the request url | |
| var urlObj = url.parse(req.url, true); | |
| // Just for debugging - print out any querystring variables | |
| for(q in urlObj['query']) { | |
| console.log( q + " = " + urlObj['query'][q]); | |
| } | |
| // update the variable defaultName if new name is passed from querystring | |
| if (urlObj['query']['thename'] != undefined) { | |
| console.log("updating 'defaultName' variable to " + urlObj['query']['thename']); | |
| defaultName = urlObj['query']['thename']; // take the name from the URL querystring i.e. ?thename=tony | |
| } | |
| /************************************/ | |
| /* START HTTP RESPONSE TO BROWSER */ | |
| /************************************/ | |
| // prepare HTTP response header | |
| res.writeHead(200, {'Content-Type': 'text/html'}); | |
| // HTTP response body | |
| res.write('<html>\n<body>\n'); | |
| res.write('<h1>Hello ' + defaultName + '<h1>\n'); | |
| res.write('<form method="GET">\n<input type="text" placeholder="type a name" name="thename">\n<input type="submit" value="submit new name">\n</form>\n'); | |
| res.write('</body>\n</html>'); | |
| // HTTP response finished | |
| res.end(); | |
| }); | |
| server.listen(port, localIP); | |
| // print message to terminal that server is running | |
| console.log('Server running at http://'+ localIP +':'+ port +'/'); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment