javascript - Toggle code not working in IE11 -


here code class called toggle, toggles multiple components in site. html has data attribute on called data-expand-content, , css set when data-expand-content true, display: block or whatever content. , js toggles data attribute on click. works fine on browsers except ie11, please me figure out wrong?

thanks!

here's js

class toggle {     constructor(control, el) {         const togglelink = document.queryselector('.primary-nav__toggle-link');         control = document.queryselector(control);         el = document.queryselector(el);         if(el) {             control.addeventlistener('click', function(e) {                 if(el.dataset.expandcontent == "false") {                     el.dataset.expandcontent = "true"                     if(e.target == document.queryselector('.primary-nav__toggle-icon')) {                         document.queryselector('.primary-nav__toggle-icon').setattribute('src', '../assets/close-menu.svg');                     }                 } else {                     el.dataset.expandcontent = "false";                     if(e.target == document.queryselector('.primary-nav__toggle-icon')) {                         document.queryselector('.primary-nav__toggle-icon').setattribute('src', '../assets/burger-menu.svg');                     }                 }             })         }        } }  // new instances of class passed control , element gets toggled const menu = new toggle('.primary-nav__toggle-link', '#primary-nav'); const bannerel = new toggle('.banner', '.banner');


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