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
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...
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....
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 ...
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...
classList.add("mediumLabels"); } }, { mode: "count", values: 5, labelsVisible: true, tickCreatedFunction: function(initialValue, tickElement, labelElement) { tickElement.classList.add("largeTicks"); labelElement.classList.add("largeLabels"); labelElement.onclick = function() { const new...
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 ...
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...
searches subtree for elements with given class name(s) (string can contain space separated classes) return a NodeListSince 2010ish[1] you can also do CSS-style queries: querySelectorsearch for first match' for a CSS query return an Element, or null...