Disallow Use of Chained Assignment Expressions (no-multi-assign)

禁止连续赋值 (no-multi-assign)

Chaining the assignment of variables can lead to unexpected results and be difficult to read.


a = b = c = d;

Rule Details

This rule disallows using multiple assignments within a single statement.


Examples of incorrect code for this rule:

错误 代码示例:

/*eslint no-multi-assign: "error"*/

var a = b = c = 5;

var foo = bar = "baz";

var a =
    b =

Examples of correct code for this rule:

正确 代码示例:

/*eslint no-multi-assign: "error"*/
var a = 5;
var b = 5;
var c = 5;

var foo = "baz";
var bar = "baz";

var a = c;
var b = c;


This rule was introduced in ESLint 3.14.0.

该规则在 ESLint 3.14.0 中被引入。