let, var and const, inJavaScript. But there are some significant differences between var, let, and const keywords, which we will discuss in this article. We will also explain the scope of each keyword and its other necessary concepts. ...
1 name : function(){} or function name (){} | ReactJS 1 What is the difference between this.state.function and this.function in ReactJS 0 Understanding the difference between this.function() and this.function 0 Difference between react functions 4 What is the d...
substr(0, 10); // need date in YYYY-MM-DD format } let endDate = new Date(endingDate); if (startDate > endDate) { const swap = startDate; startDate = endDate; endDate = swap; } const startYear = startDate.getFullYear(); const february = (startYear % 4 === 0 && startYe...
let supervisor = undefined // I may or may not have a supervisor. I either don't know // if I do or not, or I am choosing not to tell you. It is // irrelevant or none of your business. There is a difference in meaning between these three cases, and JavaScript distinguishes the...
import differenceBy from 'lodash/differenceBy' const myDifferences = differenceBy(Result1, Result2, 'value') This will return the difference between two arrays of objects, using the key value to compare them. Note two things with the same value will not be returned, as the other ...
Therefore either put them outside the functional component or use an apropriate hook to store the result between renders. I'd suggest doing the later as it still keeps it in the react loop, and makes it possible to ocassionally recreate the values if a dependency of the ...
Couldn’t understand the difference between object and plain object in JavaScript. I know how Object looks like but don’t understand plain object. I googled about this but couldn’t understand. As per my understanding normal object looks like below const object = {}; Or we do call functi...
The difference between them was pointed out clearly by Günter and @Relu. Since a code snippet is worth a thousand words, let’s go through the below example to understand them easier. Thanks @Christoph Burgdorf for the awesome article Angular uses Rx.js Observables instead of promises for ...
stub and fake are objects in that they can vary their response based on input parameters. the main difference between them is that a Fake is closer to a real-world implementation than a stub. Stubs contain basically hard-coded responses to an expected request. Let see an example: public ...
const foo = 'bar' 'foo' is declared but its value is never read ts(6133) 'foo' is assigned a value but never used.eslint@typescript-eslint/no-unused-vars I'm not sure which one I need to suppress. For reference, here is my .eslintrc: { "extends": "react-app" ...