首頁 > 開發者 > JavaScript
node.js+express製作網頁計算機，node.jsexpress
環境：
主機:WIN10
express安裝：
1.安裝express-generator
輸入命令：
npm install -g express-generator
2.安裝express
輸入命令：
npm install -g express
3.驗證是否安裝成功
輸入命令：express -V
查看協助：express --help
建立工程：
express -e calculatorcd calculator && npm install
運行預設網頁：
輸入命令：npm start或者node ./bin/www
連接埠配置在/bin/www中。
可以執行加法運算。
原始碼：
view/index.ejs:增加輸入框
<!DOCTYPE html> <html> <head> <title><%= title %></title> <link rel='stylesheet' href='/stylesheets/style.css' /> </head> <body> <form method="post"> <p>計算機</p> <input type="text" name="num1" value=<%= numa %> /><br /> <input type="text" name="num2" value=<%= numb %> /><br /> <input type="submit" value="計算" /> <p>結果:<%= sum %></p> </form> </body> </html>
routes/index.js:對提交的資料進行計算並推送結果
var express = require('express'); var router = express.Router(); /* GET home page. */ router.get('/', function(req, res, next) { res.render('index', { title: '計算機V1.0 by jdh', numa: 0, numb: 0, sum: 0 }); }); router.post('/', function (req, res) { console.log("接收:", req.body.num1, req.body.num2); var sum = parseFloat(req.body.num1) + parseFloat(req.body.num2); console.log('sum = ',sum); res.render('index', { title: '計算機V1.0 by jdh', // numa: req.body.num1, // numb: req.body.num2 numa: req.body.num1, numb: req.body.num2, sum: sum }); }); module.exports = router;
您可能感興趣的文章:
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
