Vue2.0入門實例注意事項

因爲 vue2.0 致使其餘相關編譯打包工具沒更新致使

解決辦法: 請運行如下命令

npm update -g

報錯

Error: Cannot find module 'opn'
Error: Cannot find module 'webpack-dev-middleware'
Error: Cannot find module 'express'
Error: Cannot find module 'compression'
Error: Cannot find module 'sockjs'
Error: Cannot find module 'spdy'
Error: Cannot find module 'http-proxy-middleware'
Error: Cannot find module 'serve-index'

若是你用的是老版本的 vue-cli 還可能報其餘錯誤，須要更新一下 vue-cli

npm update vue-cli

安裝一下這個依賴到工程開發環境

cnpm install opn --save-dev
cnpm install webpack-dev-middleware --save-dev
cnpm install express --save-dev
cnpm install compression --save-dev
cnpm install sockjs --save-dev
cnpm install spdy --save-dev
cnpm install http-proxy-middleware --save-dev
cnpm install serve-index --save-dev
cnpm install connect-history-api-fallback --save-dev

再啓動項目，報錯

ERROR in ./src/main.js
Module build failed: Error: Cannot find module 'babel-runtime/helpers/typeof'
at Function.Module._resolveFilename (module.js:440:15)
at Function.Module._load (module.js:388:25)
at Module.require (module.js:468:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/Volumes/MacStorage/Coding/Web/vue-test/node_modules/.6.17.0@babel-core/lib/transformation/file/index.js:6:16)
at Module._compile (module.js:541:32)
at Object.Module._extensions..js (module.js:550:10)
at Module.load (module.js:458:32)
at tryModuleLoad (module.js:417:12)
at Function.Module._load (module.js:409:3)
@ multi main
ERROR in ./~/.2.1.0-beta.8@webpack-dev-server/client/socket.js
Module not found: Error: Can't resolve 'sockjs-client' in '/Volumes/MacStorage/Coding/Web/vue-test/node_modules/.2.1.0-beta.8@webpack-dev-server/client'
@ ./~/.2.1.0-beta.8@webpack-dev-server/client/socket.js 1:13-37
@ ./~/.2.1.0-beta.8@webpack-dev-server/client?http://localhost:8080
@ multi main

安裝一下 babel-runtime

cnpm install babel-helpers --save-dev

啓動項目，再次報錯

Module build failed: Error: Cannot find module 'babel-helpers'
Module build failed: Error: Cannot find module 'babel-traverse'
Module build failed: Error: Cannot find module 'json5'
Module build failed: Error: Cannot find module 'babel-generator'
Module build failed: Error: Cannot find module 'detect-indent'
Module build failed: Error: Cannot find module 'jsesc'

找不到依賴那就再安裝一下

cnpm install babel-helpers --save-dev
cnpm install babel-traverse --save-dev
cnpm install json5 --save-dev

遇到

Module build failed: Error: Cannot find module '模塊名'

那就安裝

cnpm install 模塊名 --save-dev(關於環境的，表現爲npm run dev 啓動不了)
cnpm install 模塊名 --save(關於項目的，好比main.js，表現爲npm run dev 成功以後控制檯報錯)
好比escape-string-regexp、strip-ansi、has-ansi、is-finite、emojis-list

 寫示例時注意：

1、一個組件下只能有一個並列的 div，能夠這麼寫，因此複製官網示例的時候只要複製 div 裏面的內容就好。

2、數據要寫在 return 裏面而不是像文檔那樣子寫