body.classList.add('myfont-loaded'); }).catch(function() { console.log('Font could not be loaded.'); }); Step 4. Add CSS for Loaded Font css .myfont-loaded { font-family: 'MyFont', sans-serif; } 2. Lazy Loading for Images Step 1. Using Native Lazy Loading Add the loading ...
document.querySelectorAll('.lazy-bg').forEach(el=>{ el.classList.add('loaded'); }); 4. Overusing JavaScript for Lazy Loading While JavaScript-based lazy loading solutions offer flexibility, overusing themincreases resource usageandmay not work on all browsers. ...
In our basic implementation of change detection we’ll use the setter functionality provided by JavaScript. So we define a setter for the rating property and trigger updates when its value changes. The DOM update is performed by swapping classes on list items. Here is the...
boxes.forEach(box =>{ const boxTop = box.getBoundingClientRect().top if(boxTop < triggerBottom){ box.classList.add('show') } else { box.classList.remove('show') } })}what is DOMRect, 链接Element:getBoundingClientRect( )链接#改变自己 ...
app.classList.toggle('has-error', true); The reactivity, in this case, is handled in the browser — the app’s change of class propagates to its descendants until the internal mechanism in the browser decides whether to render the label. This technique...
[type=text");varlabel=listItem.querySelector("label");varcontainsClass=listItem.classList.contains("editMode");//if class of parent is .editif(containsClass){//switch from .editMode//Label text becomes inputs valuelabel.innerText=editInput.value;}else{//Switch to .editMode//input value ...
was-nodejs-module-used web-packing-the-internet web-testing-nirvana-with-cypress web-working-like-a-boss what-i-do-after-a-conference index.html what-i-have-done what-is-the-difference-between-streams-and-functional-reactive-programming when-can-the-test-click when-in-dou...
Just, to have it complete: the Client-side Object Model has two other methods in the Field-class, SetShowInNewForm() and SetShowInDisplayForm(), to make a similar functionality available in the other forms for the list. Yes, it is also possible to archive the same goal by modifying ...
el4.classList.add("d-none") : el4.className += ' ' + "d-none"; var el5 = document.getElementById("reset"); el5.classList ? el5.classList.remove("d-none") : el5.className = el5.className.replace(new RegExp('(^|\\b)' + "d-none".split(' ').join('|') + '(\\b|...
document.body.classList.remove('hasJS'); Нобольшевпечатляетвстроеннаяподдержкапереключенияклассов: document.body.classList.toggle('hasJS'); // и document.body.classList.contains('hasJS'); ...