如何修复在create-react-app项目上未定义错误'FB'的no-undef？ [英] How to fix error 'FB' is not defined no-undef on create-react-app project?

问题描述

我使用此链接作为我的起始文件来创建项目。

I made the project using this link as my starting file.

https://github.com/facebookincubator/create-react-app

但是在我尝试设置Facebook登录按钮后

But after i tried to make Facebook login button with follow by their official docs with this.

componentDidMount(){
    console.log('login mount');
    window.fbAsyncInit = function() {
        FB.init({
            appId      : '320866754951228',
            xfbml      : true,
            version    : 'v2.6'
        });

        FB.getLoginStatus(function(response) {
            //this.statusChangeCallback(response);
        });

    };

    (function(d, s, id){
        var js, fjs = d.getElementsByTagName(s)[0];
        if (d.getElementById(id)) {return;}
        js = d.createElement(s); js.id = id;
        js.src = "//connect.facebook.net/en_US/sdk.js";
        fjs.parentNode.insertBefore(js, fjs);
    }(document, 'script', 'facebook-jssdk'));
}

所以刷新浏览器时出现此错误。

So i got this errors when the browser was refreshed.

Failed to compile.

Error in ./src/components/user_profile/LoginForm.js

/Sites/full_stack_production/xxxxx
  70:13  error  'FB' is not defined  no-undef
  76:13  error  'FB' is not defined  no-undef

✖ 2 problems (2 errors, 0 warnings)

所以我想是因为ESLint导致了此错误。
如何解决此问题或对该 FB 变量进行例外处理？

So i guess because ESLint that cause this errors. How can i fix this or make the exception for this FB variable?

谢谢！

推荐答案

ESLint不知道变量 FB 是全局变量。您可以通过在文件顶部添加以下内容来声明引用为全局变量：

ESLint doesn't know that the variable FB is a global. You can declare a variable you referenced as a global by adding the following to the top of your file:


/ * global FB * /


有关更多信息，请查看官方ESLint文档上的规则详细信息部分： http://eslint.org/docs/rules/no-undef

For more information, check out the "Rule Details" section on the official ESLint docs: http://eslint.org/docs/rules/no-undef

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