1.Eslint js代码规范报错

 WARNING  Compiled with 2 warnings                                      10:43:26

  ✘  http://eslint.org/docs/rules/quotes                       Strings must use singlequote

  src/components/HelloWorld.vue:43:9

    name: "HelloWorld",

           ^

  ✘  http://eslint.org/docs/rules/space-before-function-paren  Missing space before function parentheses

  src/components/HelloWorld.vue:44:7

    data() {

         ^

  ✘  http://eslint.org/docs/rules/quotes                       Strings must use singlequote

  src/components/HelloWorld.vue:46:12

        msg: "Welcome to Your Vue.js App"

              ^

  ✘  http://eslint.org/docs/rules/semi                         Extra semicolon

  src/components/HelloWorld.vue:47:6

      };

        ^

  ✘  http://eslint.org/docs/rules/semi                         Extra semicolon

  src/components/HelloWorld.vue:49:2

  };

    ^

✘ 5 problems (5 errors, 0 warnings)

Errors:

  2  http://eslint.org/docs/rules/quotes

  2  http://eslint.org/docs/rules/semi

  1  http://eslint.org/docs/rules/space-before-function-paren

  ✘  http://eslint.org/docs/rules/quotes  Strings must use singlequote

  src/App.vue:43:9

    name: "App"

           ^

  ✘  http://eslint.org/docs/rules/semi    Extra semicolon

  src/App.vue:44:2

  };

    ^

✘ 2 problems (2 errors, 0 warnings)

Errors:

  1  http://eslint.org/docs/rules/quotes

  1  http://eslint.org/docs/rules/semi

You may use special comments to disable some warnings.

Use // eslint-disable-next-line to ignore the next line.

Use /* eslint-disable */ to ignore all warnings in a file.

出现这种问题是由于在bulid/webpack.base.conf.js里面有如下的配置：

rules: [

...

(config.dev.useEslint ? [createLintingRule()] : []),

解决这个问题也很简单，点进config.dev.useEslint，发现在config/index.js里配置

useEslint: true, // 改为false即可。

2.引入element ui框架出现的问题

出现这种错误的原因是没有把element ui下载到该项目路径下，所以在用npm或者淘宝镜像cnpm下载时，终端必须在该项目路径下打开，然后就可以顺利解决这个错误了