Open All Links In a New Tab

gistfile1.js

// Open all links on a page in new tab -- for MBW
// Requires ECMAScript 6's `Set()` for getting unique urls
// I'm too lazy to write a `uniq` function nor do I want to pull in a 3rd party lib
// Works in Firefox 25+, Chrome 38+, Opera 25+, Safari 7.1+, Internet Explorer 11+
new Set(
  Array.prototype.filter.call(document.querySelectorAll('a[href],area[href]'), function(acc, el) {
    el.href[0] !== '#' && acc.push(el)
    return acc
  }, [])
).forEach(function(href) {
  window.open(href, '_blank')
})

gistfile2.md

The above can be copy-pasted into a terminal or save it as a bookmarklet by saving the following as the URL (sorry, GitHub's markdown won't let me directly link a bookmarklet)

javascript:(function openLinksInNewTab(){new Set(Array.prototype.reduce(document.querySelectorAll('a[href],area[href]'),function(a,e){ e.href[0]!=='#'&&a.push(e);return a},[])).forEach(function(a){window.open(a,'_blank')})}());

Updated to be more efficient. I wrote this 6 years ago with very little JavaScript experience at the time.