一、安装npm install -g eslint 安装eslint编辑器安装插件eslint（具体安装方法根据不同编辑器而不同）

二、使用使用方法一：eslint --init npm中用命令新建eslintrc.js文件eslint yourfile.js npm中用命令检查自己文件中的错误

使用方法二：手动在项目的根目录下新建eslintrc.*文件（.js、.json、.yaml、.yml等），进行配置（具体配置规则详见下文），即可在安装好eslint的编辑器中查看到出现错误的位置。

三、配置：http://eslint.org/docs/rules/ (以下规则文件配置一个即可，置于项目根目录下)(1).eslintrc文件中进行配置 http://eslint.org/docs/user-guide/configuring

{
    "rules": {
        "semi": ["error", "always"],
        "quotes": ["error", "double"]
    }
}

四、其他1.在样式之前标注“/* eslint-disable */”，可忽略配置的规则；标注“/* esint-enable */“，开启配置的规则2.“/* eslint-enable */“必须在“/* eslint-disable */”之后使用3.忽略指定的内容：新建一个.eslineignore文件，例如：# /node_modules/* and /bower_components/* ignored by default# Ignore built files except build/index.jsbuild/*!build/index.js通过命令 eslint --ignore-path .eslintignore file.js可检测是否被忽视4.enlint 有很多的rules，为了改变rule的设置，可以设置rule ID等同于一些规则属性：如"off" or 0 关闭规则"warn" or 1 打开规则，出现警告提示"error" or 2 打开规则，出现错误提示规则可如下定义：

"rules": {
    "camel_case": 2
  }

五、配置文件

{
    "rules": {
    "array-callback-return": "error",
    "indent": ["error", 4, {"SwitchCase": 1}],
    "block-spacing": "error",
    "brace-style": ["error", "1tbs"],
    "camelcase": ["error", { "properties": "never" }],
    "callback-return": ["error", ["cb", "callback", "next"]],
    "comma-spacing": "error",
    "comma-style": ["error", "last"],
    "consistent-return": "error",
    "curly": ["error", "all"],
    "default-case": "error",
    "dot-notation": ["error", { "allowKeywords": false }],
    "eol-last": "error",
    "eqeqeq": "error",
    "guard-for-in": "error",
    "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
    "keyword-spacing": "error",
    "lines-around-comment": ["error", {
        "beforeBlockComment": true,
        "afterBlockComment": false,
        "beforeLineComment": true,
        "afterLineComment": false
    }],
    "new-cap": "error",
    "newline-after-var": ["error", "never"],
    "new-parens": "error",
    "no-array-constructor": "error",
    "no-invalid-this": "error",
    "no-multi-spaces": "error",
    "no-redeclare": "error",
    "no-return-assign": "error",
    "no-spaced-func": "error",
    "no-trailing-spaces": "error",
    "semi": "error",
    "semi-spacing": "error",
    "quotes":["error","double"],
    "space-before-function-paren": ["error", "never"],
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "space-unary-ops": ["error", {"words": true, "nonwords": false}],
    "spaced-comment": "error",
    "yoda": ["error", "never"],
    "no-mixed-requires": "error",
    "handle-callback-err": ["error", "err"]
  }
}

六、配置文件说明