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@sibelius
sibelius / testingConcept.md
Last active February 1, 2024 17:36
testing library concept and basic test

You first need to undestand the concept of frontend tests.

You should not test the implementation but the behavior

You test like the end user

For instance, imagine a login screen with email and password inputs and a submit button

The test should input the email and the password, then click in the submit button.

@threepointone
threepointone / for-snook.md
Last active August 26, 2023 15:43
For Snook

https://twitter.com/snookca/status/1073299331262889984?s=21

‪“‬In what way is JS any more maintainable than CSS? How does writing CSS in JS make it any more maintainable?”

‪Happy to chat about this. There’s an obvious disclaimer that there’s a cost to css-in-js solutions, but that cost is paid specifically for the benefits it brings; as such it’s useful for some usecases, and not meant as a replacement for all workflows. ‬

‪(These conversations always get heated on twitter, so please believe that I’m here to converse, not to convince. In return, I promise to listen to you too and change my opinions; I’ve had mad respect for you for years and would consider your feedback a gift. Also, some of the stuff I’m writing might seem obvious to you; I’m not trying to tell you if all people of some of the details, but it might be useful to someone else who bumps into this who doesn’t have context)‬

So the big deal about css-in-js (cij) is selectors.

@meetzaveri
meetzaveri / reactFileUpload.md
Last active March 15, 2021 16:32
File upload snippet for react 
import React from "react";
import ReactDOM from "react-dom";

import "./styles.css";

class FileInput extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
@meetzaveri
meetzaveri / Vue lifecycle hooks.md
Last active March 5, 2018 10:24

Vue.js 2 Lifecycle hooks

beforeCreate() : This method is called synchronously after the Vue instance has just been initialized, before data observation and event/watcher setup.

created() : This method is called synchronously after the Vue instance is created. Data observation, computed properties, methods and event callbacks have already been set up at this stage but the mounting phase has not started yet.

beforeMount() : This method is called right before the component is mounted. So it is called before the render method is executed.

mounted() : This method is called after the component has just been mounted.

@bsorrentino
bsorrentino / getDPI.js
Last active February 11, 2023 03:25
Get DPI from javascript (live at: https://jsfiddle.net/bsorrentino/s8c51jvt/)
//
// inspired by https://stackoverflow.com/a/838755/521197
//
function getDPI() {
var div = document.createElement( "div");
div.style.height = "1in";
div.style.width = "1in";
div.style.top = "-100%";
div.style.left = "-100%";
div.style.position = "absolute";
@lordelph
lordelph / interact-demo.html
Created January 17, 2017 18:52
basic example for interact.js
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Drag Drop Demo</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/interact.js/1.2.8/interact.min.js"></script>
<style>
#drag-1, #drag-2 {
width: 25%;
@markerikson
markerikson / render-logic.js
Last active January 1, 2024 06:20
React render function organization
// See https://blog.isquaredsoftware.com/presentations/react-redux-ts-intro-2020-12/#/36 for slides
// My basic render function structure:
function RenderLogicExample({
someBoolean, // 1) Destructure values from `props` object
someList,
}) {
// 2) Declare state values
const [a, setA] = useState(0);
const [b, setB] = useState(0);
@techgaun
techgaun / s3-aws-sdk-nodejs-image-upload.js
Created July 1, 2015 21:52
http://stackoverflow.com/questions/13807339/upload-a-binary-file-to-s3-using-aws-sdk-for-node-js
//required node modules
//untested
var request = require('request');
var cheerio = require('cheerio');
var fs = require('fs');
var s3 = require('s3');
var AWS = require('aws-sdk');
var url = 'https://medium.com/@benjaminhardy/8-things-every-person-should-do-before-8-a-m-cc0233e15c8d'; //url of site
@CristinaSolana
CristinaSolana / gist:1885435
Created February 22, 2012 14:56
Keeping a fork up to date

1. Clone your fork:

git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream