When running unit tests with Jest in react the window.crypto API is causing problems. I haven’t found a way to incorporate crypto in Jest without installing other packages which is something I can’t do. So without using another npm package is there a way to test functions that use: crypto.getRando…
Tag: javascript
Checking ‘undefined’ or ‘null’ of any Object
I am working on Angular project and time to time I used to have check undefined or null over Object or it’s properties. Normally I use lodash _.isUndefined() see example below: I couldn’t see any problem with it. But I had discussion with my colleague during review of above code. He was telling me…
Get Bootstrap’s current theme colors in Javascript
My objective is to create charts using chart.js using colors that match the current chosen Bootstrap 4 theme (there are multiple available for the site) My current strategy is to have a badge of every color on the page: and then use jQuery to pull the background colors into an array: I can then give this arra…
javascript date String array push issue! Not the desired value
I’d like to get a date between the start and end dates The first value, is the desired value. be worth! BUT arrTemp[j] value, Not the desired value. Do you know why? Answer Use moment, never try and roll your own date functions.
Splitting a string before finding longest word
I have read a few different posts on this so I am sorry to ask this again but none seemed to solve my issue. I’m trying to draw out the length of the longest word in a string, that is coming from HTML. All I can get is, “Uncaught TypeError: Cannot read property ‘split’ of undefinedR…
How to hide the “Command Palette” item from the list of actions in Monaco Editor
I have been looking everywhere, Monaco docs, github, SO but there seems to be no examples as to how to hide and disable the “command palette” command from the context menu: Any advice? Answer Oh well, I had no choice but to hack my way into the DOM in order to remove the “Command PaletteR…
How to add custom Icons to NativeBase
I have the .ttf and .svg files for customized icons that I designed. But I would like to import them into my NativeBase project, making them available for use in NB’s <Icon /> component. How can I achieve this? Answer React Native Custom Icon Font for NativeBase Adopted from: https://medium.com/@k…
Bootstrap 4 navigation tabs content not showing content on initial page load
On initial page load, the tabs show but the content for that selected tab does not. If I click the “Link” tab and back to the “Post” tab then it shows up. On page load it looks like this (the div with the tab-pane class hasn’t been displayed): There are no errors in my console an…
How can I initiate Ajax request from firefox developer tools?
I want to test several Ajax requests after the backend code completed. Now my method is adding a dummy button, an onclick event and an ajax request inside that. Is there any way I can initiate Ajax request for testing from firefox-developer-tools without editing my jsp / frontend? Answer You can use Scratchpa…
React.js: Raw HTML string does not gets recognized as HTML elements from Node.js
I am sending a raw HTML from node.js to react. and It was successful. However, when I try to render it, they are render as raw string as opposed to HTML elements This is how I get the string from front-end: The render method from my react(Simplified) looks like this: In my server.js, i have the following code…