I am trying to upload files directly to dropbox [from a browser / web application], The "uploadFile" function on the code API needs the file to be uploaded available on the server, this puts me in trouble, because I do not want any files to be uploaded to my server and from there to dropbox. $f = fopen("test.jpg", "rb"); // requires file on server $result = $dbxClient->uploadFile("t
我试图直接上传文件到Dropbox [从浏览器/ Web应用程序],代码API上的“uploadFile”功能需要文件上传到服务器上,这让我陷入困境,因为我不想要任何文件上传到我的服务器,并从那里到Dropbox。 $f = fopen("test.jpg", "rb"); // requires file on server $result = $dbxClient->uploadFile("test.jpg", dbxWriteMode::add(), $f); fclose($f); 尝试了这个https://github.com/dropbox/dropbox-js失望地说,没有明确的文档,文
I have chat app with firebase database and Firebase cloud messaging. I can send firebase notification via console but in real scenario it should be automatic. To make automatic notification,My friend wrote Index.js (Added in cloud functions) file for me but its not sending notifications. As per our logic function should trigger whenever there is any new entries (in any node or in any room) an
我与Firebase数据库和Firebase云消息传递聊天应用程序。 我可以通过控制台发送Firebase通知,但在实际情况下,它应该是自动的。 为了进行自动通知,我的朋友为我写了Index.js(在云功能中添加)文件,但它没有发送通知。 根据我们的逻辑函数,应该触发任何新条目(在任何节点或任何房间中),并通过firebase函数获取这些值,并向FCM服务器发出通知接收方设备的请求(从token_To获取接收方设备的值)。 信息 Message_From
I have the following Jest test: import React from 'react'; import IndexSign from '../IndexSign'; import renderer from 'react-test-renderer'; it('renders correctly', () => { const tree = renderer.create( <IndexSign index={1}/> ).toJSON(); expect(tree).toMatchSnapshot(); }); The IndexSign component that I am calling calls this StyleSheet component: import {StyleSheet} from 'r
我有以下的Jest测试: import React from 'react'; import IndexSign from '../IndexSign'; import renderer from 'react-test-renderer'; it('renders correctly', () => { const tree = renderer.create( <IndexSign index={1}/> ).toJSON(); expect(tree).toMatchSnapshot(); }); 我正在调用的IndexSign组件调用此StyleSheet组件: import {StyleSheet} from 'react-native'; export default StyleShe
I am trying to pass a value from the render function to the component: = react_component('App', props: {test: 'abc'}, prerender: false) Routes.jsx <Route path="/" component={App} > App.jsx (component) class App extends React.Component { render() { return ( <Header test={this.props.test}> </Header> {this.props.children} <Footer /> );
我试图将渲染函数的值传递给组件: = react_component('App', props: {test: 'abc'}, prerender: false) Routes.jsx <Route path="/" component={App} > App.jsx(组件) class App extends React.Component { render() { return ( <Header test={this.props.test}> </Header> {this.props.children} <Footer /> ); } } App.propTypes = { test: PropTypes.st
Is there any possibility to change the __proto__ property of an object in IE9 or IE10? Or is MS still not planning to include it in their JS engine? I need it in a very special situation where I need to change __proto__ after the object is created. __proto__ is going to be standardized in ES6. It is currently in Appendix B of the ES6 draft which in practice means that if it is implemented i
是否有可能在IE9或IE10中更改对象的__proto__属性? 或者MS仍然没有计划将它包含在他们的JS引擎中? 我需要它在一个非常特殊的情况下,在创建对象后需要更改__proto__ 。 __proto__将在ES6中标准化。 它目前在ES6草案的附录B中,实际上意味着如果它被实现,它需要具有以下语义。 __proto__既可作为Object.prototype上的Object.prototype ,也就是说所有对象都可以在默认情况下读写它。 但是,它可以从Object.prototype
This question already has an answer here: How does the “this” keyword work? 19 answers What is the 'new' keyword in JavaScript? 13 answers
这个问题在这里已经有了答案: “this”关键字如何工作? 19个答案 JavaScript中的'new'关键字是什么? 13个答案
This question already has an answer here: What is the 'new' keyword in JavaScript? 13 answers Take this for example: function SomeClass() {} SomeClass.prototype = { sayHi: function() { console.log('hello'); } }; function foo() { return new SomeClass(); } foo() // => returns a new SomeClass object In that case, foo is what they're referring to as a "
这个问题在这里已经有了答案: JavaScript中的'new'关键字是什么? 13个答案 以此为例: function SomeClass() {} SomeClass.prototype = { sayHi: function() { console.log('hello'); } }; function foo() { return new SomeClass(); } foo() // => returns a new SomeClass object 在这种情况下, foo就是他们所说的“工厂”功能,因为它有点像创建对象的工厂类型(就像现实生活中工厂
This question already has an answer here: What is the 'new' keyword in JavaScript? 13 answers Douglas Crockford has a good article on how "new" works. In the example you give, the code in canvas.js (assuming the display.canvas should actually be display.Canvas ) is defining a function for how a new canvas is created. The main.js code uses that function to create a Canvas
这个问题在这里已经有了答案: JavaScript中的'new'关键字是什么? 13个答案 道格拉斯克罗克福德关于“新”的作品有一篇很好的文章。 在你给的例子中,canvas.js中的代码(假设display.canvas实际上应该是display.Canvas )正在定义一个函数,用于如何创建一个新的画布。 main.js代码使用该函数来创建Canvas。
This question already has an answer here: What is the 'new' keyword in JavaScript? 13 answers RegExp("foo") and new RegExp("foo") do the same thing: 15.10.3 The RegExp Constructor Called as a Function 15.10.3.1 RegExp(pattern, flags) If pattern is an object R whose [[Class]] internal property is "RegExp" and flags is undefined, then return R unchan
这个问题在这里已经有了答案: JavaScript中的'new'关键字是什么? 13个答案 RegExp("foo")和new RegExp("foo")做同样的事情: 15.10.3作为函数调用的RegExp构造函数 15.10.3.1 RegExp(模式,标志) 如果pattern是[[Class]]内部属性为“RegExp”并且标记未定义的对象R,则返回R不变。 否则就像通过表达式new RegExp(pattern,flags)一样调用标准的内置RegExp构造函数(15.10.4.1),并
This question already has an answer here: What is the 'new' keyword in JavaScript? 13 answers Because any function can be a constructor. Imagine if you used foo by itself: var obj3 = new foo(3); You'd expect to get an object similar too { a: 3 } , right? This still works even if the function is attached to something else. Every time you use new you're creating a new obj
这个问题在这里已经有了答案: JavaScript中的'new'关键字是什么? 13个答案 因为任何函数都可以是构造函数。 想象一下,如果你自己使用foo : var obj3 = new foo(3); 你也希望得到一个类似的对象{ a: 3 } ,对吧? 即使函数连接到其他东西,这仍然可以工作。 每次你使用new你都在创建一个新的对象,而不是改变现有的对象。 首先,您将该函数用作方法: obj1.foo(2); 在这种情况下,上下文被设置为obj1