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IntersectionObserver

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JavierMendozain answered on August 13, 2020 Popularity 10/10 Helpfulness 4/10

answer IntersectionObserver

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IntersectionObserver

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var options = {
  root: document.querySelector('#scrollArea'),
  rootMargin: '0px',
  threshold: 1.0
}

var observer = new IntersectionObserver(callback, options);

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: developer.mozilla.org

Tags: intersection-observer javascript

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Contributed on Aug 13 2020

JavierMendozain

0 Answers Avg Quality 2/10

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intersection observer

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var observer = new IntersectionObserver(changes => {
  for (const change of changes) {
    console.log(change.time);               // Timestamp when the change occurred
    console.log(change.rootBounds);         // Unclipped area of root
    console.log(change.boundingClientRect); // target.getBoundingClientRect()
    console.log(change.intersectionRect);   // boundingClientRect, clipped by its containing block ancestors, and intersected with rootBounds
    console.log(change.intersectionRatio);  // Ratio of intersectionRect area to boundingClientRect area
    console.log(change.target);             // the Element target
  }
}, {});

// Watch for intersection events on a specific target Element.
observer.observe(target);

// Stop watching for intersection events on a specific target Element.
observer.unobserve(target);

// Stop observing threshold events on all target elements.
observer.disconnect();

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: www.w3.org

Tags: intersection-observer intersection

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Contributed on Sep 30 2022

Robert Misener

0 Answers Avg Quality 2/10

intersectionobserver

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let callback = (entries, observer) => {
  entries.forEach((entry) => {
    // Each entry describes an intersection change for one observed
    // target element:
    //   entry.boundingClientRect
    //   entry.intersectionRatio
    //   entry.intersectionRect
    //   entry.isIntersecting
    //   entry.rootBounds
    //   entry.target
    //   entry.time
  });
};

Popularity 9/10 Helpfulness 2/10 Language whatever

Source: developer.mozilla.org

Tags: intersection-observer intersection

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Contributed on Sep 19 2022

0 Answers Avg Quality 2/10

intersection Observer

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const numSteps = 20.0;

let boxElement;
let prevRatio = 0.0;
let increasingColor = "rgba(40, 40, 190, ratio)";
let decreasingColor = "rgba(190, 40, 40, ratio)";

// Set things up
window.addEventListener("load", (event) => {
  boxElement = document.querySelector("#box");

  createObserver();
}, false);

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: developer.mozilla.org

Tags: intersection-observer intersection

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Contributed on Aug 29 2021

Ahmed Elfaham

0 Answers Avg Quality 2/10

IntersectionObserver

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