Only Open One Accordion Tab At One Time

I have an accordion that works really well, it looks good on the site and works as it should. However, I'm trying to add some more JavaScript functionality to it, to make it more i

Solution 1:

To achieve this you need to reset the state of the accordion back to its original state on each click, before you set the required classes on the clicked elements. To do that you can extract functionality to set the class names in to their own function and call it as required. Try this:

var acc = document.getElementsByClassName("accordion");
var panel = document.getElementsByClassName('panel');

for (var i = 0; i < acc.length; i++) {
    acc[i].onclick = function() {
        var setClasses = !this.classList.contains('active');
        setClass(acc, 'active', 'remove');
        setClass(panel, 'show', 'remove');

        if (setClasses) {
            this.classList.toggle("active");
            this.nextElementSibling.classList.toggle("show");
        }
    }
}

functionsetClass(els, className, fnName) {
    for (var i = 0; i < els.length; i++) {
        els[i].classList[fnName](className);
    }
}

Working example

Solution 2:

Close all opened tabs before opening selected tab. This will prevent multiple tabs from being open at one time.

// Get all Accordion and Panellet accHeading = document.querySelectorAll(".accordion");
let accPanel = document.querySelectorAll(".accordion-panel");

for (let i = 0; i < accHeading.length; i++) {
    // Execute whenever an accordion is clicked 
    accHeading[i].onclick = function() {
        if (this.nextElementSibling.style.maxHeight) {
           hidePanels();     // Hide All open Panels 
        } else {
           showPanel(this);  // Show the panel
        } 
    };
}

// Function to Show a PanelfunctionshowPanel(elem) {
  hidePanels();
  elem.classList.add("active");
  elem.nextElementSibling.style.maxHeight = elem.nextElementSibling.scrollHeight + "px";
}

// Function to Hide all shown PanelsfunctionhidePanels() {
  for (let i = 0; i < accPanel.length; i++) {
      accPanel[i].style.maxHeight = null;
      accHeading[i].classList.remove("active");
  }
}

* {box-sizing: border-box;}

/* Style the Headings that are used to open and close the accordion panel */.accordion {
  background-color: #eee;
  color: #444;
  cursor: pointer;
  padding: 18px;
  margin: 0;
  font-weight: 300;
}

/* Change color of the heading and icon (on hover and click) */.active, .accordion:hover, .accordion:hover::after {
  background-color: #007eff;
  color: white;
}

/* Add "plus" sign (+) after Accordion */.accordion::after {
  content: '\002B';
  color: #777;
  font-weight: bold;
  float: right;
}

/* Add "minus" sign (-) after Accordion (when accordion is active) */.active::after {
  content: "\2212";
  color: white;
}

/* Style the accordion panel */.accordion-panel {
  padding: 018px;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.2s ease-out;
}

<divstyle="border: 1px solid lightgray;"><h2class="accordion">Section 1</h2><divclass="accordion-panel"><p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p></div><h2class="accordion">Section 2</h2><divclass="accordion-panel"><p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p></div><h2class="accordion">Section 3</h2><divclass="accordion-panel"><p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p></div><h2class="accordion">Section 4</h2><divclass="accordion-panel"><p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p></div></div>

Solution 3:

When selecting one item, you just need to hide all of them beforehand.

var acc = document.getElementsByClassName("accordion");
var i;

for (i = 0; i < acc.length; i++) {
    acc[i].onclick = function() {
        hideAll();

        this.classList.toggle("active");
        this.nextElementSibling.classList.toggle("show");
    }
}

functionhideAll() {
    for (i = 0; i < acc.length; i++) {
        acc[i].classList.toggle("active", false);
        acc[i].nextElementSibling.classList.toggle("show", false);
    }
}

Solution 4:

var acc = document.getElementsByClassName("accordion");
var i;
var last;
for (i = 0; i < acc.length; i++) {
    acc[i].onclick = function() {
        if(last){
            last.classList.toggle("active",false);
            last.nextElementSibling.classList.toggle("show",false);
        }
        this.classList.toggle("active");
        this.nextElementSibling.classList.toggle("show");
        last=this;
    }
}

variable last will track the last active accordion, so you don't need to iterate every accordion and panel again.

Solution 5:

you have to cover the panel with accordion, so you can easily do that.

refer this

html
<div class="accordion"><b>Heading 1</b><divclass="panel"><pclass="text-light">Text 1</p></div>
    </div>
<divclass="accordion"><b>Heading 2</b><divclass="panel"><pclass="text-light">Text 2</p></div></div>jquery:
$('.accordion').click(function() {
$(this).find('.panel').show();
$(this).siblings().find('.panel').hide();

});

Working example