Wanikani Egg Timer

Adds a timer during reviews and displays the final time afterward
当前为 2016-01-16 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name        Wanikani Egg Timer
// @namespace   wkeggtimer
// @description Adds a timer during reviews and displays the final time afterward
// @include     http://www.wanikani.com/review*
// @include     https://www.wanikani.com/review*
// @version     0.1
// @author      Horus Scope
// @grant       GM_addStyle
// @grant	GM_getValue
// @grant	GM_setValue
// @license     GPL version 3 or later: http://www.gnu.org/copyleft/gpl.html
// ==/UserScript==

function timeStamp( inc = 0 ) {
	var prev = GM_getValue("eggtimer");
	prev += inc;
	GM_setValue("eggtimer",prev);
	//  Yes, parseInt is prettier.
	var hours = Math.floor(prev / 60 / 60);
	var minutes = Math.floor( (prev - (hours*60*60)) / 60 );
	var seconds = prev - hours*60*60 - minutes*60;
	return ""
	  + (hours? hours+"h " : "")
	  + (minutes? minutes+"m " : "")
	  + (seconds? seconds+"s" : "");
}
var timeSpan; // referenced in go( )
function generate(  ) {
	var display = document.createElement('div');
	display.className = 'timerSessionDisplay'; // no style actually defined
	timeSpan = document.createElement('span');
	timeSpan.className = 'timerSessionSpan'; // no style actually defined
	timeSpan.textContent = "Last review: " + timeStamp( );
	display.appendChild(timeSpan);
	return display;
}

// start counting. [or, dont]
function go( )
{
	// style
	var styleStr = ""; // <div class="timerSessionDisplay"><span class="timerSessionSpan">
	GM_addStyle(styleStr);
	// change behavior depending on screen [summary, reviewing now]
	if(/session$/.exec(window.location.href)) { // review/session [ reviewing now ]
		GM_setValue("eggtimer",0); // time start
		var header = document.getElementById('summary-button'); // because easy
		var display = generate( ); // makes div object
		header.appendChild( display );

		setInterval(function() {timeSpan.textContent = "Elapsed: " + timeStamp( 1 );}, 1000);
	} else { // review [ summary screen ]
		var footer = document.getElementById('last-session-date'); // makes sense
		var display = generate( );
		footer.insertBefore(display, footer.childNodes[0]); // probably float:left btw
	}
}

window.onload = go( );