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“uncaught (in promise) domexception: failed to execute 'send' on 'websocket'”这个错误表明,在尝试通过WebSocket的send方法发送数据时,操作失败了。这个错误是在一个Promise中未被捕获的,因此被标记为“uncaught (in promise)”。 2. 常见原因 WebSocket未正确建立连接:在WebSocket连接尚未建立(即readyState不是...
引入之后在你的js文件加上type="text/babel",加上之后你会发现这个时候可以支持ES6的语法了。 但是~你会发现又会报一个错误:Error in mounted hook: "ReferenceError: “Promise”未定义" 这是因为之前使用的babel转换器只会转化新的句法,对一些API不转化。请查看http://babeljs.io/#polyfill 这个时候我们在项目...
入缓存后数据就是错误的。做了一个更改就是retry三次，得到解决。 第三次：最近去抓appstore的应用指数...
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finally()Provides a function to be called when a promise is fulfilled or rejected then()Provide two functions to be called when a promise is fulfilled or rejected See Also: The JavaScript Promise Tutorial ❮ PreviousNext ❯ Track your progress - it's free! Log inSign Up...
❮PreviousJavaScript PromiseReferenceNext❯ Example // Create a Promise constmyPromise1 =newPromise((resolve, reject) => { setTimeout(resolve,200,"King"); }); // Create another Promise constmyPromise2 =newPromise((resolve, reject) => { ...