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// XPath CheatSheet
// To test XPath in your Chrome Debugger: $x('/html/body')
// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/
// 0. XPath Examples.
// More: http://xpath.alephzarro.com/content/cheatsheet.html
'//hr[@class="edge" and position()=1]' // every first hr of 'edge' class
@StevenFarley
StevenFarley / luhn.js
Last active August 29, 2015 14:10 — forked from ShirtlessKirk/luhn.js
/**
* Variant of Avraham Plotnitzky's String.prototype method mixed with the "fast" version
* see: https://sites.google.com/site/abapexamples/javascript/luhn-validation
* @author ShirtlessKirk. Copyright (c) 2012.
* Licensed under WTFPL (http://www.wtfpl.net/txt/copying)
*/
function luhnChk(luhn) {
var len = luhn.length,
mul = 0,