consistent-this

捕获当前执行上下文时强制命名一致

通常需要捕获当前的执行上下文，以便随后可用。一个突出的例子是 jQuery 回调：

var that = this;
jQuery('li').click(function (event) {
    // here, "this" is the HTMLElement where the click event occurred
    that.setFoo(42);
});

this 有很多常用的别名，例如 that、self 或 me。最好确保团队同意的任何别名在整个应用程序中始终如一地使用。

规则详情

此规则对具有指定别名 this 的变量强制执行两件事：

• 如果声明了具有指定名称的变量，则必须将其初始化（在声明中）或分配（在与声明相同的范围内）值 this。
• 如果变量被初始化或赋值为 this，则变量的名称必须是指定的别名。

选项

9NHbribgvlAIiqeVNtZmFLsnjN2t5hwvv1eRnt1MTsX2XLMFtNAh+8BOX7h818pt

GrTmCvEMeL2prd/t+It5GiRtD5A+kM80K3yyYHCtEr7ywfX40Dp7wrtTrnwd/Ztop5BEnUweN1fxLITO2nDrX+66cmKkokHr2uXiPPjwoDVKIxJ/0wZeUEBxvUovwHof

1usau4ITNzPbSW1XK9odV+vkES//Hhni2vawRJuUE7o8dpLu6+XN/DRj+W+0NPYkXHf1aaz1sy1weQK4GukSyEe0DzyxH/EnQmvN/tcBwx0=

/*eslint consistent-this: ["error", "that"]*/

var that = 42;

var self = this;

that = 42;

self = this;

1usau4ITNzPbSW1XK9odV+vkES//Hhni2vawRJuUE7o8dpLu6+XN/DRj+W+0NPYkVL2CGt9WREaZtAiSvJxu+VbzkSgGWZlBp5yHjQWq8m4=

/*eslint consistent-this: ["error", "that"]*/

var that = this;

var self = 42;

var self;

that = this;

foo.bar = this;

eQMNpAEyM8GE3lCx0AUF9CFyp6R67F/lDO1cUEv7kDDsNTNn9XxxXQRyyckzTKd28lTAmlgEdKUrMAQOj3POYzqwnfNIal9kC/QRqodGi/IxNFhOzdEh+IFjVVXS0Ik6fAQehxBrHirOVLmqnVZlaQ==

/*eslint consistent-this: ["error", "that"]*/

var that;
function f() {
    that = this;
}

eQMNpAEyM8GE3lCx0AUF9HO8qtqT9v58kWKaNOCQJRerDhpPWUdoSuez2OdnK1YymL0/TzJd38emDQ9UlKC67vQUH4dPyn6g4tu1QIE2q6A477ZDsbtLJZPZhGlyGb4yF8oudnIM036D0CVudmcfpA==

/*eslint consistent-this: ["error", "that"]*/

var that;
that = this;

var foo, that;
foo = 42;
that = this;

何时不使用

zjpcWXkNFSGU5oq7OrSv9Iq7HNHgsAVdvvjvP+bUGNZCvYod78jY2P4F6D40SJMCbKj9G/OTa/8PSQAoAhnd69znVEwH/bbiKnDtXTH3DecBfTepqQENwsdvk45pTcoq0CwQInQef84QviuLVp+z17Tu8flbXm0QiCjHpYm9sODCsIiECo0m1UPiD98Hsri47XEqgm99uSHpFx2bZAT16DjiedSTbCOPzu5h9+FFfVM=