User:BethNaught/hideSectionDesktop.js

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This user script seems to have a documentation page at User:BethNaught/hideSectionDesktop.

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 /**
  * This script adds a [toggle visibility] link to level 2 section headers.
  * The link does what it says on the tin.
  * No promise of accuracy or non-brokenness made.
  * Tested in Vector and Monobook. Last test: 2018年07月12日.

  * To install, add the following to your commmon.js or skin.js:

  mw.loader.load('//en.wikipedia.org/w/index.php?title=User:BethNaught/hideSectionDesktop.js&action=raw&ctype=text/javascript'); // Backlink: [[User:BethNaught/hideSectionDesktop.js]]

  * Author: [[User:BethNaught]]

  * Category: [[Category:Wikipedia scripts]]
  */

 /** global $ */

 $(document).ready(function(){
 // Helper functions
 function_toggleVisibility(elt){
 if(elt.style.display=="none"){
 elt.style.display="";
 }else{
 elt.style.display="none";
 }
 }
 function_createToggleVisibilityLink(sectionID){
 // Create HTML
 varout=document.createElement('span');
 out.classList.add('mw-editsection');

 varleft=document.createElement('span');
 varright=document.createElement('span');
 left.classList.add('mw-editsection-bracket');
 right.classList.add('mw-editsection-bracket');
 varleftBracket=document.createTextNode("[");
 varrightBracket=document.createTextNode("]");
 left.appendChild(leftBracket);
 right.appendChild(rightBracket);

 varcenter=document.createElement('a');
 center.classList.add('nonimage');
 center.title='Toggle visibility: '+sectionID;
 varcenterText=document.createTextNode("toggle visibility");
 center.appendChild(centerText);
 center._classToToggleSelector='.bn-hidesection-'+sectionID;

 out.appendChild(left);
 out.appendChild(center);
 out.appendChild(right);

 // Event listener
 center.addEventListener("click",function(){
 $(this._classToToggleSelector).each(function(){
 _toggleVisibility(this);
 });
 });
 returnout;
 }

 // BEGIN WORKFLOW
 // This holds the stuff that comes from wikitext, and that only
 varparserOutput=document.getElementsByClassName('mw-parser-output')[0];

 if(parserOutput){
 // Initialise loop variables
 varclassifying=false;
 varsectionID=0;
 vartemp_a,currentChild;
 varloopLength=parserOutput.children.length;

 // Loop over children adding necessary stuff
 for(vari=0;i<loopLength;i++){
 currentChild=parserOutput.children[i];
 if(currentChild.nodeName.toLowerCase()=="h2"){
 classifying=true;// all subsequent elements need modifying
 sectionID+=1;
 temp_a=_createToggleVisibilityLink(sectionID);
 currentChild.appendChild(temp_a);
 }elseif(classifying){
 currentChild.classList.add('bn-hidesection-'+sectionID);
 }
 }
 }
 });

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