test

• http://www.paulirish.com/2009/throttled-smartresize-jquery-event-handler/
• http://stackoverflow.com/questions/24004791/can-someone-explain-the-debounce-function-in-javascript
• http://blogorama.nerdworks.in/javascriptfunctionthrottlingan/
• https://www.nczonline.net/blog/2007/11/30/the-throttle-function/
• https://segmentfault.com/a/1190000002701805
• http://drupalmotion.com/article/debounce-and-throttle-visual-explanation
• https://css-tricks.com/the-difference-between-throttling-and-debouncing/
• https://davidwalsh.name/javascript-debounce-function
• http://benalman.com/projects/jquery-throttle-debounce-plugin/
• http://www.cnblogs.com/dolphinX/p/3403821.html
• http://slogeor.com/2015/11/28/throttle-debounce.html
• https://github.com/hahnzhu/read-code-per-day/issues/5
• http://1ke.co/course/294