Refresh NBViewer Button

Add a button to navigation bar to flush the cache of nbviewer

当前为 2016-10-09 提交的版本，查看最新版本。

换行

// ==UserScript==
// @name        Refresh NBViewer Button
// @namespace   Peijun Zhu
// @description Add a button to navigation bar to flush the cache of nbviewer
// @include     http://nbviewer.jupyter.org/github/*
// @version     2
// @grant       none
// ==/UserScript==
function flush() {
  var url = window.location.href;
  if (url.substr( - 1) === '/') {
    url = url.substr(0, url.length - 1);
  }
  var tail = '?flush=true';
  if (!url.endsWith(tail)) {
    window.location.href = url + tail;
  }
  return;
}

function add_flush_button() {
//lu->li->a->input->button->flush()
  var lu = document.getElementsByClassName('nav navbar-nav navbar-right') [0];
  var li=document.createElement('li');
  var a=document.createElement('a');
  li.appendChild(a);
  lu.appendChild(li);
  var input = document.createElement('input');
  input.type = 'button';
  input.value = 'Flush';
  input.onclick = flush;
  a.appendChild(input);
}
add_flush_button();