* http://www.dustindiaz.com/getelementsbyclass/
* http://stackoverflow.com/questions/1818865/do-we-have-getelementsbyclassname-in-javascript
*
- * See also http://ejohn.org/blog/getelementsbyclassname-speed-comparison/
+ * See also https://johnresig.com/blog/getelementsbyclassname-speed-comparison/
*
* @param {String} class: name of _single_ class to find
* @param {String} [taghint] limit search to given tags