Chris Kavanagh chriskavanagh

Handling Errors

Express.js makes it a breeze to handle errors in your routes.

Express lets you centralizes your error-handling through middleware.

Let's look at patterns for how to get the most out of your error-handling.

First, our error-handling middleware looks like this:

How to Eyeball Your ‘This’ Context in Javascript

by zach.dev

The early programmer struggles with the Javascript keyword this. But understanding your this context is easier than it seems.

This is all about where a function is invoked. Often, early programmers worry about where the function was declared. Perhaps the function was declared in a specific file or a particular object. Surely this changes it's this!

Nope.

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>CSS Grids - Named Grid Areas</title>
	<meta name="viewport" content="width=device-width">
	<link rel="stylesheet" href="main.css"/>
	<style>

	p>span{

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>CSS Transitions</title>
	<meta name="viewport" content="width=device-width">
	<style>
	*{
	padding: 0;
	margin: 0;

	import { FieldProps } from 'formik'
	import React from 'react'
	import Select, { Option, ReactSelectProps } from 'react-select'

	export const SelectField: React.SFC<ReactSelectProps & FieldProps> = ({
	options,
	field,
	form,
	}) => (
	<Select

	import React from 'react';
	import { Stuff, StuffSchema } from '/imports/api/stuff/stuff';
	import { Grid, Segment, Header } from 'semantic-ui-react';
	import AutoForm from 'uniforms-semantic/AutoForm';
	import TextField from 'uniforms-semantic/TextField';
	import SelectField from 'uniforms-semantic/SelectField';
	import SubmitField from 'uniforms-semantic/SubmitField';
	import ErrorsField from 'uniforms-semantic/ErrorsField';
	import { Bert } from 'meteor/themeteorchef:bert';
	import { Meteor } from 'meteor/meteor';

	const BACKEND_URL = 'https://fakeserver.com/api'

	export function signUpUser(email, password) {
	return async (dispatch) => {
	try {
	const signUp = await axios.post(`${BACKEND_URL}/signup`, {
	email: email,
	password: password
	})

	/* Loading Libraries */
	var gulp = require('gulp'),
	sass = require('gulp-sass'),
	rename = require('gulp-rename'),
	concat = require('gulp-concat'),
	uglify = require('gulp-uglify'),
	imagemin = require('gulp-imagemin'),
	cache = require('gulp-cache'),
	notify = require('gulp-notify'),
	del = require('del'),

	// 🔥 Node 7.6 has async/await! Here is a quick run down on how async/await works

	const axios = require('axios'); // promised based requests - like fetch()

	function getCoffee() {
	return new Promise(resolve => {
	setTimeout(() => resolve('☕'), 2000); // it takes 2 seconds to make coffee
	});
	}

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document Fragments</title>
	<style type="text/css">
	html{
	font-size: 120%;
	font-family: BlinkMacSystemFont, -apple-system, “Segoe UI”, Roboto, Helvetica, Arial, sans-serif;