This line of code is not working, how can I create a DOM element and adding it a class instantly? Answer You could use just jQuery for this : Hope this helps.
Author: admin@master
Why are Javascript promises resolving out of order?
I am attempting to use JavaScript promises in a project and the order of events are unexpected. I have narrowed it down into a small demo using a test promise. And then I call it like so: This is the console output: How can I get an output of: Answer .then() expects a function reference. When you do something…
const enum in Typescript
I have a React application that is using Typescript. Right now I’m running into an issue with const enum. Here’s my enum: The service I’m trying to match up to isn’t returning the value, but the index of the item within the enum. So, for instance, if the user is set to snack on an appl…
Pug – generating Select and Options
I am new to Pug and I am trying to generate a Select set of Options like this: However the result I get, in the rendered page, is an empty select input followed by the list of options as text Answer Indents the code https://pugjs.org/language/iteration.html
Serializing an ES6 class object as JSON
I’d like to serialize myClass object to json. One easy way I can think of is, since every member is actually javascript object (array, etc..) I guess I can maintain a variable to hold the member variables. this.prop.foo = this.foo and so on. I expected to find a toJSON/fromJSON library for class objects…
Vue.js Routing with back button
I already use this Vue.js Routing example application. In the src/main.js I have so much data value . Now with socket.io i set the token to “sdawdda2d2ada2ad22ad” When application start than the currentRoute is equal with “/” Its okey, the first page loaded. src/routes.js When i want t…
R shiny – last clicked button id
I have multiple action buttons, on which i want to show different select Inputs and I want to know last clicked button id, how can I do that? When I use It shows me all button which were clicked, however I want to know which one was the last in order to enable click once again on previous buttons. How
Handle unexpected data in event listeners such as WebSocket.onmessage
How do I handle unexpected things such as weird data, corrupted data, unexpected data, or something going wrong in an event listener. WebSocket exposes a onmessage event listener. If it were to receive something unexpected, how is this to be dealt with? By throwing an exception, logging to console, silently i…
Lodash group by multiple properties if property value is true
I have an array of vehicles that need to be grouped by make and model, only if the ‘selected’ property is true. The resulting object should contain properties for make model and count. Using lodash, how can I organize the vehicle objects into the desired result objects. I’m able to get the v…
Custom Error Object with Apollo Server
I’m trying to use a custom error with apollo-server and it seems that my custom error has a property (code) that isn’t available from within formatError. I have a simple error handler works something like this: I’m having trouble because when I log error.code from within formatError it’…