| #!/bin/bash | |
| # download and install latest chromedriver for linux or mac. | |
| # required for selenium to drive a Chrome browser. | |
| install_dir="/usr/local/bin" | |
| version=$(wget -qO- https://chromedriver.storage.googleapis.com/LATEST_RELEASE) | |
| if [[ $(uname) == "Darwin" ]]; then | |
| url=https://chromedriver.storage.googleapis.com/$version/chromedriver_mac64.zip | |
| elif [[ $(uname) == "Linux" ]]; then | |
| url=https://chromedriver.storage.googleapis.com/$version/chromedriver_linux64.zip |
| /** | |
| * Delays calling the given function until the browser is notifying us | |
| * about a certain minimum budget or the timeout is reached. | |
| * @param {!Window} win | |
| * @param {number} startTime When we started waiting for idle. | |
| * @param {number} minimumTimeRemaining Minimum number of millis idle | |
| * budget for callback to fire. | |
| * @param {number} timeout in millis for callback to fire. | |
| * @param {function()} fn Callback. | |
| */ |
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.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
A quick overview of the node.js streams interface with basic examples.
This is based on @brycebaril's presentation, Node.js Streams2 Demystified
Streams are a first-class construct in Node.js for handling data.
Think of them as as lazy evaluation applied to data.
| /** | |
| * Like, basically PERFECT scrollbars | |
| */ | |
| /* | |
| It's pure CSS. | |
| Since a quick google search will confirm people going crazy about Mac OS Lion scrollbars... | |
| this has no fade-out effect. | |
| In Mac OS Lion, the lowest common denominator is always showing scrollbars by a setting. |
