Adds links to wanikani vocab pages from the button on jisho

jisho_2_wanikani.js

// ==UserScript==
// @name     Add proper Wanikani links to Jisho
// @version  1
// @grant    none
// @include  https://jisho.org*
// ==/UserScript==

var aTags = document.getElementsByTagName("a");
var searchText = "wanikani";

for (var i = 0; i < aTags.length; i++) {
  
  if (aTags[i].textContent.substring(0, 8).toLowerCase() == searchText) {

    var readingDiv = aTags[i].parentElement.parentElement.parentElement.getElementsByTagName("div")[0];
    var textEl = readingDiv.getElementsByTagName("div")[0].getElementsByTagName("span");
    
    var fullForm;
		for (var j = 0; j < textEl.length; j++) {
    	if (textEl[j].classList == "text") {
        fullForm = textEl[j].textContent.trim();
      }
    }
    
    aTags[i].href = "https://www.wanikani.com/vocabulary/" + fullForm;    
  }
}