element.classList.add('newClass'); 2. Multiple Class Management Challenge: Adding or managing multiple classes simultaneously can become complex. Solution: Use className with a space-separated string or iterate with classList.add(). element.className = 'class1 class2'; // or ['cl...
div.classList.toggle("visible"); // add/remove visible, depending on test conditional, i less than 10 div.classList.toggle("visible", i < 10 ); console.log(div.classList.contains("foo")); // add or remove multiple classes div.classList.add("foo", "bar", "baz"); div.classList....
add or remove multiple classes div.classList.add(“foo”, “bar”, “baz”); div.classList.remove(“foo”, “bar”, “baz”); // add or remove multiple classes using spread syntax let cls = [“foo”, “bar”]; div.classList.add(…cls); div.classList.remove(…cls); // replace...
bar", "baz");// add or remove multiple classes using spread syntaxlet cls = ["foo", "bar"];div.classList.add(...cls); div.classList.remove(...cls);// replace class "foo" with class "bar"div.classList.replace("foo", "bar");4、window.getComputedStyle 通过 element.sytle.xxx ...
For multiple classes, one has to be careful to parse/save the class string properly, for example: elem.className = 'foo bar baz'; UsingclassListmakes working with multiple names easier, with theadd,removeandtogglemethods. var cl = elem.classList; ...
hero.classList.add('next'); } else { slider.activeIndex = (slider.activeIndex - 1 + slider.total) % slider.total; slider.hero.classList.add('prev'); } //reset classes utils().removeClasses(slider.items, ['prev', 'active']); //set prev const prevItems = [...slider.items] ....
accessKey addEventListener() appendChild() attributes blur() childElementCount childNodes children classList className click() clientHeight clientLeft clientTop clientWidth cloneNode() closest() compareDocumentPosition() contains() contentEditable dir firstChild firstElementChild focus() getAttribute() getAttribute...
Notice that if you click on a square that is taken by the other player, the marker may turn into a question mark. This is because you have added both "x" and "o" classes to the document. If you used className instead of classList you would be able to take over another player's ...
button.classList.add("active");elsebutton.classList.remove("active"); };for(vari =0; i < buttons.length; i++) { button.addEventListener("click", toolbarButtonHandler); } Great! This not only simplified down to a single function that is added multiple times, also made the code more ...
functionchangeColor(){document.getElementById("btn").classList.toggle('red');document.getElementById("btn").classList.toggle('green'); } In the above code, we are picking DOM elements based on it's id "btn" and then usingclassList.toggle, we are adding or removing classes based on if...