no-bitwise

禁止按位运算符

JavaScript 中位运算符的使用非常少见，通常 & 或 | 只是一个错误的 && 或 ||，这将导致意外行为。

¥The use of bitwise operators in JavaScript is very rare and often & or | is simply a mistyped && or ||, which will lead to unexpected behavior.

const x = y | z;

规则详情

¥Rule Details

此规则不允许按位运算符。

¥This rule disallows bitwise operators.

此规则的错误代码示例：

¥Examples of incorrect code for this rule:

在线运行 
/*eslint no-bitwise: "error"*/

let x = y | z;

const x1 = y & z;

const x2 = y ^ z;

const x3 = ~ z;

const x4 = y << z;

const x5 = y >> z;

const x6 = y >>> z;

x |= y;

x &= y;

x ^= y;

x <<= y;

x >>= y;

x >>>= y;

此规则的正确代码示例：

¥Examples of correct code for this rule:

在线运行 
/*eslint no-bitwise: "error"*/

let x = y || z;

const x1 = y && z;

const x2 = y > z;

const x3 = y < z;

x += y;

选项

¥Options

此规则有一个对象选项：

¥This rule has an object option:

  • "allow"：允许将位运算符列表用作例外。

    ¥"allow": Allows a list of bitwise operators to be used as exceptions.

  • "int32Hint"：允许在 |0 模式中使用按位 OR 进行类型转换。

    ¥"int32Hint": Allows the use of bitwise OR in |0 pattern for type casting.

allow

使用 { "allow": ["~"] } 选项的此规则的正确代码示例：

¥Examples of correct code for this rule with the { "allow": ["~"] } option:

在线运行 
/*eslint no-bitwise: ["error", { "allow": ["~"] }] */

~[1,2,3].indexOf(1) === -1;

int32Hint

使用 { "int32Hint": true } 选项的此规则的正确代码示例：

¥Examples of correct code for this rule with the { "int32Hint": true } option:

在线运行 
/*eslint no-bitwise: ["error", { "int32Hint": true }] */

const b = a|0;

版本

此规则是在 ESLint v0.0.2 中引入。

资源