This question already has an answer here: How to execute a JavaScript function when I have its name as a string 29 answers 您可以使用括号表示法使用包含标识符的字符串访问成员: var target = 'next'; $("foobar")[target](); // identical to $("foobar").next() If you're wanting to use jQuery, the answer is quite elegant. Because jQuery is an object (which can be accessed like an array) - yo
这个问题在这里已经有了答案: 当我的名字作为字符串29答案时如何执行JavaScript函数 您可以使用括号表示法使用包含标识符的字符串访问成员: var target = 'next'; $("foobar")[target](); // identical to $("foobar").next() 如果你想使用jQuery,答案非常优雅。 因为jQuery是一个对象(可以像数组一样访问) - 你可以使用$("selector")[target]() 。 例子: var target = 'next'; jQuery("selector")[ta
This question already has an answer here: How to execute a JavaScript function when I have its name as a string 29 answers I'd avoid eval. To solve this problem, you should know these things about JavaScript. Functions are first-class objects, so they can be properties of an object (in which case they are called methods) or even elements of arrays. If you aren't choosing the obj
这个问题在这里已经有了答案: 当我的名字作为字符串29答案时如何执行JavaScript函数 我会避免评估。 为了解决这个问题,你应该知道关于JavaScript的这些东西。 函数是第一类对象,因此它们可以是对象的属性(在这种情况下称为方法),甚至可以是数组的元素。 如果您没有选择函数所属的对象,则它属于全局范围。 在浏览器中,这意味着你将它挂在名为“window”的对象上,这是全局图所在的对象。 数组和对象密切相关。
This question already has an answer here: How to execute a JavaScript function when I have its name as a string 29 answers Seeing as I hate eval, and I am not alone: var fn = window[settings.functionName]; if(typeof fn === 'function') { fn(t.parentNode.id); } Edit: In reply to @Mahan's comment: In this particular case, settings.functionName would be "clickedOnItem" . This
这个问题在这里已经有了答案: 当我的名字作为字符串29答案时如何执行JavaScript函数 看到我讨厌eval,我并不孤单: var fn = window[settings.functionName]; if(typeof fn === 'function') { fn(t.parentNode.id); } 编辑:在回复@ Mahan的评论:在这种特殊情况下, settings.functionName将是"clickedOnItem" 。 这会在运行时翻译var fn = window[settings.functionName]; 到var fn = window["cli
I have spent a lot of time working on a webpage and have been very lazy about committing things to Git. Today, I attempted to push everything up to my repo, but I think I may have caused a disaster. I am very new to Git and basically just use it for its most basic functions. I was unable to push anything and the console recommended using a pull request, after doing that and attempting to push
我花了很多时间在一个网页上工作,而且对于向Git提交内容一直很懒惰。 今天,我试图把所有东西都推到我的回购区,但我想我可能已经造成了一场灾难。 我对Git非常陌生,基本上只是将它用于最基本的功能。 我无法push任何东西,并且控制台建议使用pull请求,在这样做并尝试重新推送后,我开始与我的gemfile和gemfile.lock发生一堆合并冲突。 我试着解决这个问题,但后来我开始在我的文件中看到随机的<<<<<<
In Protractor 5.0.0, there was a new browser.explore() method added to the API. How is it different from the previous browser.pause() or browser.debugger() or the browser.enterRepl() ? What is the preferred way to debug tests in Protractor? Each one has their own advantages and disadvantages. browser.explore() is pretty new one and also this has great advantage of debugging the test using
在Protractor 5.0.0中,增加了一个新的browser.explore()方法。 它与以前的browser.pause()或browser.debugger()或browser.enterRepl()什么不同? 在Protractor中调试测试的首选方法是什么? 每个人都有自己的优点和缺点。 browser.explore()是一个非常新的例子,它也有很大的优势,使用我们在测试用例中使用的相同脚本来调试测试。 element(by.cssContainingText('Username')).click(); browser.pause()只允许键入
I created a new Aurelia plugin, which is named Aurelia-Slickgrid and got it all working locally with .feature('resources') . I was then ready for the next step, making it available to everyone as a plugin and created a Github project and made it available under this GitHub link - Aurelia-Slickgrid. I used Aurelia Skeleton Plugin to create my plugin, also ran gulp build to create the tra
我创建了一个名为Aurelia-Slickgrid的新Aurelia插件,并通过.feature('resources')在本地工作。 然后,我准备好接下来的一步,将它作为插件提供给所有人,并创建一个Github项目,并在此GitHub链接下提供 - Aurelia-Slickgrid。 我使用Aurelia Skeleton Plugin创建我的插件,同时运行gulp gulp build来创建转录输出。 然后我在NPM上发布了它,并成功安装了npm i --save aurelia-slickgrid 。 我目前正在使用Aurelia-
Evolving from Javascript, spliced FileReader for large files with Promises, how?, which showed me how a Promise can also resolve a function, now I am stuck with the same but inside an Array.reduce function. The goal is that I want to upload a file (which already does) within an array, where each array item (a file) is uploaded sequentially (ie controlled through promises). Then, I understand
从Javascript演变而来,用Promise拼接FileReader来处理大文件,怎么做呢?它向我展示了Promise如何解析一个函数,现在我坚持使用相同的功能,但是在Array.reduce函数中。 目标是我想上传一个文件(已经这样做)在一个数组中,其中每个数组项(文件)被顺序上传(即通过promise进行控制)。 然后,我明白答案在http://www.html5rocks.com/en/tutorials/es6/promises/?redirect_from_locale=es中有所说明,但我无法理解如何将
I wish to read the contents of an upload file into a Javascript variable. The program used to work using file.getAsBinary but this is now deprecated and needs to be updated to use FileReader() A form has a file upload selection an onsubmit runs a function uploadDB() in a javascript. The variable dbname is passed okay as is the file name from the upload selection I can see it with an alert o
我希望将上传文件的内容读入一个Javascript变量。 该程序用于使用file.getAsBinary工作,但现在已被弃用,需要更新以使用FileReader() 一个表单有一个文件上传选择,onsubmit在javascript中运行一个函数uploadDB()。 变量dbname被传递好,就像上传选择中的文件名一样,我可以通过alert或console.log看到它。 接收文件文本的最终bfile变量未定义。 我已经尝试了readAsText和ReadAsBinary,但bfile未定义。 var声明
I am having a typescript class on the server that is handling my socket.io communications that looks like below. basically it works, but ofc the server just saves the latest socket reference. (the person who last connected to the server, because the variable gets overwritten each time someone connects). class ChatService { private server; private app; private io; private socket
我正在处理我的socket.io通信的服务器上有一个typecript类,如下所示。 基本上它可以工作,但服务器只保存最新的套接字引用。 (最后连接到服务器的人,因为每次有人连接时变量都会被覆盖)。 class ChatService { private server; private app; private io; private socket; constructor(app, server) { this.app = app; this.server = server; this.io = require('socket.io').
I just need a simple example how to do a Node.JS server that I'll explain. Basically Node.JS will have 2 servers running: - A crude TCP server and - A Socket.IO server The objective is to forward data from a TCP Client to various Socket.IO clients interested in it The reason to do this is to make easy to do the communication with other languages (I'll have a java server sending messag
我只需要一个简单的例子来说明如何做一个Node.JS服务器,我会解释一下。 基本上Node.JS将运行2台服务器: - 一个粗略的TCP服务器和 - 一个Socket.IO服务器目标是将数据从一个TCP客户端转发到对它感兴趣的各种Socket.IO客户端 这样做的原因是使与其他语言的通信变得容易(我将有一个java服务器在tcp套接字中发送消息,因为我找不到更好的方法来做到这一点 - 所有可用的java库(socket.io服务器和用java实现的客户端)都是bug