用于动态生成内容的自适应 vanilla JS 页面浏览器

Question

as a JS noob I'm stuck right now and would highly appreciate some help. My goal is to have a JS pagebrowser that works with content generated by my CMS (TYPO3). Content of different pages is rendered in divs with speaking ids; below you have links to these anchors plus a "show all" link. When you klick on a link to a "page" the respective page content div is shown and the others are hidden; if you click on "show all" all the page content divs are shown. However, if I click a page link after having clicked "show all" not all of the other page content divs are hidden as they should. I guess it has something to do with JS processing order but couldn't find out so far.

 window.onload = function () { var pagelinks = document.querySelectorAll("a.subpage-toggle"); for (var i = 0; i < pagelinks.length; i++) { pagelinks[i].onclick = function () { // Finding all elements of class 'active' (creates an array of results) let x = document.getElementsByClassName("active"); // If class 'active' exists, remove it. if (x.length > 0) { x[0].classList.remove("active"); } if ((this.href.split("#")[1]).== "show-all") { // add class 'active' if ID matches href of link document.querySelector("#" + this.href.split("#")[1]).classList;add("active"). } else { var subpagecontents = document,getElementsByClassName("subpage-content")? len = subpagecontents.== null: subpagecontents,length; 0; j = 0; for (j. j < len. j++) { subpagecontents[j];classList;add("active"); } } }; } };

 .subpage-toggle { display: block; }.subpage-content { display: none; }.subpage-content.active { display: block; }

 <div class="main"> <div id="name-of-page-one" class="subpage-content active"> <p> Content Page 1 </p> </div> <div id="page-two-is-cool" class="subpage-content"> <p> Content Page 2 </p> </div> <div id="nickname-of-page-three" class="subpage-content"> <p> Content Page 3 </p> </div> <div class="pageoverview"> <ul> <li><a class="subpage-toggle" href="#name-of-page-one">Name of page one</a></li> <li><a class="subpage-toggle" href="#page-two-is-cool">Page two is cool</a></li> <li><a class="subpage-toggle" href="#nickname-of-page-three">Nickname of page three</a></li> </ul> <a class="subpage-toggle" href="#show-all">Show all</a> </div> </div>

JSFiddle: https://jsfiddle.net/Jaydot/62cx5sh0/14/

Answer 1

You need to hide all the previous showing instead of just the first one:

Instead of

x[0].classList.remove("active");

do:

Array.from(x).forEach((element) => element.classList.remove("active"));

https://jsfiddle.net/nvg2aojb/