This commit is contained in:
Thomas Chartron 2021-11-13 17:04:33 +01:00
parent 7ccfc34512
commit 732c6738c4
2 changed files with 5 additions and 4 deletions

View file

@ -16,6 +16,7 @@ document.addEventListener("DOMContentLoaded", function() {
// Add 'active' class if observation target is inside viewport
// console.log(entry)
// console.log(entry.intersectionRatio)
console.log('before')
console.log('entry', entry)
console.log('current', current_intersectiong_entry)
if (current_intersectiong_entry === null && entry.isIntersecting) {
@ -24,9 +25,9 @@ document.addEventListener("DOMContentLoaded", function() {
current_intersectiong_entry = entry
return true;
}
// if (current_intersectiong_entry !== null) {
// return true
// }
console.log('after')
console.log('entry', entry)
console.log('current', current_intersectiong_entry)
if (entry.isIntersecting === false) { //some section got out of viewport remove its active class and add to next sibling
let res = findCorrespondingTocTitle(entry.target) //First intersection entry
res.parentElement.classList.remove('bg-blue-800');

View file

@ -1 +1 @@
function findCorrespondingTocTitle(t){return[...document.querySelectorAll("#toc li a")].find(e=>e.href.substring(e.href.indexOf("#"))==="#"+t.id)}document.addEventListener("DOMContentLoaded",function(){document.getElementById("navbar").clientHeight,document.getElementById("toc");var e=document.querySelectorAll("#toc li a");document.getElementById("page-content");let n=null;const t=new window.IntersectionObserver(e=>{e.some(t=>{if(console.log("entry",t),console.log("current",n),null===n&&t.isIntersecting){let e=findCorrespondingTocTitle(t.target);return e.parentElement.classList.add("bg-blue-800"),n=t,!0}if(!1===t.isIntersecting){let e=findCorrespondingTocTitle(t.target);e.parentElement.classList.remove("bg-blue-800"),e.parentElement.nextElementSibling.classList.add("bg-blue-800")}})},{root:null,threshold:.1});var o=[];[...e].forEach(e=>{o.push(e.href.substring(e.href.indexOf("#")))});const r=document.querySelectorAll(o.join(","));r.forEach(e=>{t.observe(e)})});
function findCorrespondingTocTitle(n){return[...document.querySelectorAll("#toc li a")].find(e=>e.href.substring(e.href.indexOf("#"))==="#"+n.id)}document.addEventListener("DOMContentLoaded",function(){document.getElementById("navbar").clientHeight,document.getElementById("toc");var e=document.querySelectorAll("#toc li a");document.getElementById("page-content");let t=null;const n=new window.IntersectionObserver(e=>{e.some(n=>{if(console.log("before"),console.log("entry",n),console.log("current",t),null===t&&n.isIntersecting){let e=findCorrespondingTocTitle(n.target);return e.parentElement.classList.add("bg-blue-800"),t=n,!0}if(console.log("after"),console.log("entry",n),console.log("current",t),!1===n.isIntersecting){let e=findCorrespondingTocTitle(n.target);e.parentElement.classList.remove("bg-blue-800"),e.parentElement.nextElementSibling.classList.add("bg-blue-800")}})},{root:null,threshold:.1});var o=[];[...e].forEach(e=>{o.push(e.href.substring(e.href.indexOf("#")))});const l=document.querySelectorAll(o.join(","));l.forEach(e=>{n.observe(e)})});