rgranadino

#!/usr/bin/ruby
require 'json'
$sshUser = 'ec2user'
#NOTE all of our ecs clusters are prefixed with "ecs-" 
#which we assume here to save the time & trouble of having to type that out
#all of our tasks are also suffixed with the "environment" name
def sshToEcsInstance(clusterName)
    cmd = "aws ecs list-container-instances --cluster ecs-"+ clusterName
    instances =  JSON.parse(`#{cmd}`)["containerInstanceArns"]
    ec2InstanceHostname = getInstanceInfo(clusterName, instances.sample)

paulirish

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