Roger Jiang Dkra

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Point Domain to Amazon Web Services (AWS) EC2 Instance

Open the Amazon Route 53 console at https://console.aws.amazon.com/route53/.
If you are new to Amazon Route 53, you see a welcome page; choose Get Started Now for DNS Management. Otherwise, choose Hosted Zones in the navigation pane.
Choose Create Hosted Zone.
For Domain Name, type your domain name.
Choose Create.
Click the Hosted Zone, edit record set.
In the value, add ec2-54-152-134-146.compute-1.amazonaws.com.
Change your DNS file to point to the IPv4 address (This would be in something like GoDaddy).

https://moox.io/blog/keep-in-sync-git-repos-on-github-gitlab-bitbucket/

Fetch API Examples

⚠️ 2019-2020: See more examples and updates on my article here!

https://danlevy.net/you-may-not-need-axios/

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UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

	#!groovy
	import groovy.json.JsonOutput
	import groovy.json.JsonSlurper

	def label = "mypod-${UUID.randomUUID().toString()}"
	podTemplate(label: label, yaml: """
	spec:
	containers:
	- name: mvn
	image: maven:3.3.9-jdk-8