javascriptvarfont=newFontFaceObserver('MyFont');font.load().then(function(){document.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;} ...
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 ...
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 ...
Coming from snabbdom the class object notation is natively supported and they use .classList property for diffing which is a set under hood so faster than setting the class attributes on the dom nodes. I’m hoping preact also uses classList properly rather than class attribute on the underlyin...
body.classList.contains("logged-in"); 280 - const isForbidden = document.head.querySelector('meta[name="referrer"]')?.content === 'origin'; 281 280 const metaLocation = document.head.querySelector('meta[name="analytics-location"]')?.content || ''; 282 281 283 282 // 页面...
(input.classList.contains('stripe-donation-card-number')) { // if the required input is the CC field AND the selected payment is CC if (chosenPaymentMethod == 'Credit Card') { if (input.value.trim().length === 16) // if the card number is 16 digits return true; // mark as ...
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. ...
[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 ...
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...
First, we need to create all the required DOM nodes. This is our initialization logic that we’ll put into theinitmethod: exportclassRatingsComponent{...init(container) {this.list=document.createElement('ul');this.list.classList.add('ratings');this.list.addEventListener(...