Intersection Observer() 的回调函数实际上有两个参数。第一个参数是我们之前讨论过的 entries,第二个参数是正在监听交叉的 Observer 对象。 const observer =newIntersectionObserver((entries, o)=>{ console.log(o === observer);//true }); 在回调函数中,这个参数很有用,可以让我们在无法访问 Observer 变量的...
当一个元素从页面顶部或底部滚出视口时,应删除所有“inview-*”类。 有人在评论中建议使用Intersection Observer API,经过更多了解,我认为它是实现要求的最佳方法。 这是我的代码(在全屏模式下打开-预览效果不好)。你也可以在jsFiddle上找到相同的代码。 function inView(opt) { if (opt.selector === undefined...
const myObserver = new IntersectionObserver(callback, options); //开始监听目标元素 myObserver.observe(target2); console.log('🚀🚀~ myObserver:', myObserver); })(document) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. ...
Monitor if a component is inside the viewport, using IntersectionObserver API. Latest version: 9.15.1, last published: 4 days ago. Start using react-intersection-observer in your project by running `npm i react-intersection-observer`. There are 1205 othe
Intersection Observer API提供了一个可订阅的模型,可以观察该模型,以便在元素进入视口时得到通知。 创建一个观察者实例很简单,我们只需要创建一个IntersectionObserver的新实例并调用observe方法,传递一个DOM元素: const observer = new IntersectionObserver();
IntersectionObserver react hooks. Latest version: 1.0.1, last published: 2 years ago. Start using @locmod/intersection-observer in your project by running `npm i @locmod/intersection-observer`. There are no other projects in the npm registry using @locmo
这种反应性observer.observe似乎没有传递给方法。它只选取我的初始元素。这似乎很明显,因为它已在mounted钩子中实例化,但我该如何处理呢? 我是否需要为交易设置观察者并再次调用observer.observe?如果是这样,我可以简单地告诉它替换最初观察到的项目吗? javascriptvue.jsvue-componentvuejs2intersection-observer ...
Created a page for a friend using intersection observer js where the divs/images should appear as you scroll down except something is stopping it from scrolling further than the visible page- https://andylilien.com/generalreel/ but works on mine with the same script and relevant css ht...
import inViewport from 'intersection-observer-js'; const sections = document.querySelectorAll(".section"); inViewport({ $elements: sections, });A more complex example would be using special callback and data attribute (see below for API):...
Intersection Observer iswidely supportedin modern browsers. Where necessary it can bepolyfilledfor older browsers — but I prefer to take a progressive enhancement approach where possible. In the case of our header, it would not be vastly detrimental to the user experience to provide a simple, ...