dispatchRequest.js:18 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'cancelToken')

dispatchRequest.js:18出现的错误是Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'cancelToken')。这个错误通常是由于在调用的地方没有正确处理cancelToken导致的。

在开发过程中，如果前端请求正常执行，接口功能正常且正常返回数据，但是仍然报语法错误Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'code')，那么可能是因为自定义拦截器后忘记将promise对象return出去。正确的处理方式应该是将promise对象request return出去，这样调用方法的位置才会是异步执行，就不会提示语法错误了。

至于FB.js，它是一个开放源代码JavaScript库，用于控制网站的前端和后端。要使用FB.js，需要下载fb-{version}.min.js文件，并将其包含在网页的头部。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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