不管是多人合作还是个人项目，代码规范是很重要的。这样做不仅可以很大程度地避免基本语法错误，也保证了代码的可读性。这所谓工欲善其事，必先利其器，个人推荐 eslint+vscode 来写 vue，绝对有种飞一般的感觉。

现在vsc中安装eslint +vuetor

然后

首选项-设置-扩展-eslint   setttion.json

添加以下代码


"eslint.enable": true, // 是否开启检测
"editor.tabSize": 2,
"eslint.autoFixOnSave": true,
"files.associations": {
"*.vue": "vue"
},
"eslint.options": {
"extensions": [
".js",
".vue"
]
},
"eslint.validate": [
"javascript",{
"language": "vue",
"autoFix": true
},
"html",
"vue"
]


这样每次保存的时候就可以根据根目录下.eslintrc.js配置的eslint规则（或者package.json 里的eslintconfig中）来检查和做一些简单的fix。每个人和团队都有自己的代码规范，统一就好了，去打造一份属于自己的eslint 规则上传到npm吧。

eslintGif.gif




这里提供了一份我平时的eslint规则：

"rules": {
"vue/max-attributes-per-line": [2, {
"singleline": 10,
"multiline": {
"max": 1,
"allowFirstLine": false
}
}],
"vue/singleline-html-element-content-newline": "off",
"vue/multiline-html-element-content-newline":"off",
"vue/name-property-casing": ["error", "PascalCase"],
"vue/no-v-html": "off",
"accessor-pairs": 2,
"arrow-spacing": [2, {
"before": true,
"after": true
}],
"block-spacing": [2, "always"],
"brace-style": [2, "1tbs", {
"allowSingleLine": true
}],
"camelcase": [0, {
"properties": "always"
}],
"comma-dangle": [2, "never"],
"comma-spacing": [2, {
"before": false,
"after": true
}],
"comma-style": [2, "last"],
"constructor-super": 2,
"curly": [2, "multi-line"],
"dot-location": [2, "property"],
"eol-last": 2,
"eqeqeq": ["error", "always", {"null": "ignore"}],
"generator-star-spacing": [2, {
"before": true,
"after": true
}],
"handle-callback-err": [2, "^(err|error)$"],
"indent": [2, 2, {
"SwitchCase": 1
}],
"jsx-quotes": [2, "prefer-single"],
"key-spacing": [2, {
"beforeColon": false,
"afterColon": true
}],
"keyword-spacing": [2, {
"before": true,
"after": true
}],
"new-cap": [2, {
"newIsCap": true,
"capIsNew": false
}],
"new-parens": 2,
"no-array-constructor": 2,
"no-caller": 2,
"no-console": "off",
"no-class-assign": 2,
"no-cond-assign": 2,
"no-const-assign": 2,
"no-control-regex": 0,
"no-delete-var": 2,
"no-dupe-args": 2,
"no-dupe-class-members": 2,
"no-dupe-keys": 2,
"no-duplicate-case": 2,
"no-empty-character-class": 2,
"no-empty-pattern": 2,
"no-eval": 2,
"no-ex-assign": 2,
"no-extend-native": 2,
"no-extra-bind": 2,
"no-extra-boolean-cast": 2,
"no-extra-parens": [2, "functions"],
"no-fallthrough": 2,
"no-floating-decimal": 2,
"no-func-assign": 2,
"no-implied-eval": 2,
"no-inner-declarations": [2, "functions"],
"no-invalid-regexp": 2,
"no-irregular-whitespace": 2,
"no-iterator": 2,
"no-label-var": 2,
"no-labels": [2, {
"allowLoop": false,
"allowSwitch": false
}],
"no-lone-blocks": 2,
"no-mixed-spaces-and-tabs": 2,
"no-multi-spaces": 2,
"no-multi-str": 2,
"no-multiple-empty-lines": [2, {
"max": 1
}],
"no-native-reassign": 2,
"no-negated-in-lhs": 2,
"no-new-object": 2,
"no-new-require": 2,
"no-new-symbol": 2,
"no-new-wrappers": 2,
"no-obj-calls": 2,
"no-octal": 2,
"no-octal-escape": 2,
"no-path-concat": 2,
"no-proto": 2,
"no-redeclare": 2,
"no-regex-spaces": 2,
"no-return-assign": [2, "except-parens"],
"no-self-assign": 2,
"no-self-compare": 2,
"no-sequences": 2,
"no-shadow-restricted-names": 2,
"no-spaced-func": 2,
"no-sparse-arrays": 2,
"no-this-before-super": 2,
"no-throw-literal": 2,
"no-trailing-spaces": 2,
"no-undef": 2,
"no-undef-init": 2,
"no-unexpected-multiline": 2,
"no-unmodified-loop-condition": 2,
"no-unneeded-ternary": [2, {
"defaultAssignment": false
}],
"no-unreachable": 2,
"no-unsafe-finally": 2,
"no-unused-vars": [2, {
"vars": "all",
"args": "none"
}],
"no-useless-call": 2,
"no-useless-computed-key": 2,
"no-useless-constructor": 2,
"no-useless-escape": 0,
"no-whitespace-before-property": 2,
"no-with": 2,
"one-var": [2, {
"initialized": "never"
}],
"operator-linebreak": [2, "after", {
"overrides": {
"?": "before",
":": "before"
}
}],
"padded-blocks": [2, "never"],
"quotes": [2, "single", {
"avoidEscape": true,
"allowTemplateLiterals": true
}],
"semi": [2, "never"],
"semi-spacing": [2, {
"before": false,
"after": true
}],
"space-before-blocks": [2, "always"],
"space-before-function-paren": [2, "never"],
"space-in-parens": [2, "never"],
"space-infix-ops": 2,
"space-unary-ops": [2, {
"words": true,
"nonwords": false
}],
"spaced-comment": [2, "always", {
"markers": ["global", "globals", "eslint", "eslint-disable", "*package", "!", ","]
}],
"template-curly-spacing": [2, "never"],
"use-isnan": 2,
"valid-typeof": 2,
"wrap-iife": [2, "any"],
"yield-star-spacing": [2, "both"],
"yoda": [2, "never"],
"prefer-const": 2,
"array-bracket-spacing": [2, "never"]
},
"parserOptions": {
"parser": "babel-eslint"
}
},