disallow bitwise operators (no-bitwise)

禁止使用按位操作符 (no-bitwise)

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

在 JavaScript 是很少使用按位操作符，& 或 | 经常会错写为 && 或 ||，这将导致意外的情况出现。

var x = y | z;

Rule Details

This rule disallows bitwise operators.

该规则禁止使用按位操作符。

Examples of incorrect code for this rule:

错误代码示例：

/*eslint no-bitwise: "error"*/

var x = y | z;

var x = y & z;

var x = y ^ z;

var x = ~ z;

var x = y << z;

var x = y >> z;

var x = y >>> z;

x |= y;

x &= y;

x ^= y;

x <<= y;

x >>= y;

x >>>= y;

Examples of correct code for this rule:

正确代码示例：

/*eslint no-bitwise: "error"*/

var x = y || z;

var x = y && z;

var x = y > z;

var x = y < z;

x += y;

Options

This rule has an object option:

该规则有一个对象选项：

"allow": Allows a list of bitwise operators to be used as exceptions.
"allow": 允许作为例外情况出现的按位操作符列表。
"int32Hint": Allows the use of bitwise OR in |0 pattern for type casting.
"int32Hint": 预习使用在 |0 模式中按位或进行类型转换。

allow

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

选项 { "allow": ["~"] } 的正确代码示例：

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

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

int32Hint

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

选项 { "int32Hint": true } 的正确代码示例：

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

var b = a|0;

Version

This rule was introduced in ESLint 0.0.2.

该规则在 ESLint 0.0.2 中被引入。