no-func-assign.md

规则名	规则类型
no-func-assign	problem

JavaScript functions can be written as a FunctionDeclaration function foo() { ... } or as a FunctionExpression var foo = function() { ... };. While a JavaScript interpreter might tolerate it, overwriting/reassigning a function written as a FunctionDeclaration is often indicative of a mistake or issue.

function foo() {}
foo = bar;

规则详解

This rule disallows reassigning function declarations.

此规则的 错误 代码实例：

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

function foo() {}
foo = bar;

function foo() {
    foo = bar;
}

var a = function hello() {
  hello = 123;
};

Examples of incorrect code for this rule, unlike the corresponding rule in JSHint:

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

foo = bar;
function foo() {}

此规则的 正确 代码实例：

::: correct

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

var foo = function () {}
foo = bar;

function foo(foo) { // `foo` is shadowed.
    foo = bar;
}

function foo() {
    var foo = bar;  // `foo` is shadowed.
}