disallow specified identifiers (id-blacklist)

禁止使用指定的标识符 (id-blacklist)

“There are only two hard things in Computer Science: cache invalidation and naming things.” — Phil Karlton

Bad names can lead to hard-to-decipher code. Generic names, such as data, don’t infer much about the code and the values it receives. This rule allows you to configure a blacklist of bad identifier names, that you don’t want to see in your code.

糟糕的名字会导致代码很难理解。通用的名字，比如 data，并不能推断出关于代码和接收到的值的更多信息。该规则允许你配置一个标识符名称的黑名单，也就是包含那些你不想在代码中看到的名字。

Rule Details

This rule disallows specified identifiers in assignments and function definitions.

该规则禁止在赋值语句和 function 定义中使用指定的标识符。

This rule will catch blacklisted identifiers that are:

该规则对以下情况，将捕捉黑名单里的标识符：

variable declarations
变量声明
function declarations
函数声明
object properties assigned to during object creation
在对象创建过程中的属性赋值

It will not catch blacklisted identifiers that are:

该规则对以下情况，不会捕捉黑名单里的标识符：

function calls (so you can still use functions you do not have control over)
函数调用 (所以你仍然可以使用不受限制函数)
object properties (so you can still use objects you do not have control over)
对象属性 (所以你仍然可以使用不受限制的对象)

Options

The rule takes one or more strings as options: the names of restricted identifiers.

该规则有一个或多个字符串选项：受限制的标识符的名称：

For example, to restrict the use of common generic identifiers:

例如，限制通用标识符的使用：

{
    "id-blacklist": ["error", "data", "err", "e", "cb", "callback"]
}

Examples of incorrect code for this rule with sample "data", "callback" restricted identifiers:

受限制的 "data", "callback" 标识符的错误代码示例：

/*eslint id-blacklist: ["error", "data", "callback"] */

var data = {...};

function callback() {
    // ...
}

element.callback = function() {
    // ...
};

var itemSet = {
    data: [...]
};

Examples of correct code for this rule with sample "data", "callback" restricted identifiers:

受限制的 "data", "callback" 标识符的正确代码示例：

/*eslint id-blacklist: ["error", "data", "callback"] */

var encodingOptions = {...};

function processFileResult() {
    // ...
}

element.successHandler = function() {
    // ...
};

var itemSet = {
    entities: [...]
};

callback(); // all function calls are ignored

foo.callback(); // all function calls are ignored

foo.data; // all property names that are not assignments are ignored

When Not To Use It

You can turn this rule off if you are happy for identifiers to be named freely.

如果对标识符命名没什么要求，可以关闭此规则。

Version

This rule was introduced in ESLint 2.0.0-beta.2.