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update

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Thomas Chartron 2021-11-13 17:25:38 +01:00
parent 77d97e8493
commit 5a5edd0342
2 changed files with 35 additions and 22 deletions
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55
src/js/page.js
View file

@ -12,31 +12,44 @@ document.addEventListener("DOMContentLoaded", function() {
let current_intersectiong_entry = null
const observer = new window.IntersectionObserver(entries => {
entries.some(entry => {
console.log('before')
console.log('entry', entry)
// console.log('current', current_intersectiong_entry)
if (entry.isIntersecting) {
let res = findCorrespondingTocTitle(entry.target)
res.parentElement.classList.add('bg-blue-800');
// current_intersectiong_entry = entry
return true;
}
if (!entry.isIntersecting) {
let res = findCorrespondingTocTitle(entry.target) //First intersection entry
res.parentElement.classList.remove('bg-blue-800');
res.parentElement.nextElementSibling.classList.add('bg-blue-800');
return true;
}
// console.log('observe')
// 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 (entry.isIntersecting) {
if (current_intersectiong_entry === null) { // first page load
let res = findCorrespondingTocTitle(entry.target)
res.parentElement.classList.add('bg-blue-800');
current_intersectiong_entry = entry
return true;
}
if (current_intersectiong_entry.boundingClientRect.y < 0) { //previous selected is out of viewport
current_intersectiong_entry.target.classList.remove('bg-blue-800');
let res = findCorrespondingTocTitle(entry.target) //First intersection entry
res.parentElement.classList.add('bg-blue-800');
current_intersectiong_entry = entry
return true;
}
}
console.log('after')
console.log('entry', entry)
console.log('current', current_intersectiong_entry)
// if (entry.isIntersecting) {
// if (current_intersectiong_entry === null) { // first page load
// let res = findCorrespondingTocTitle(entry.target)
// res.parentElement.classList.add('bg-blue-800');
// current_intersectiong_entry = entry
// return true;
// }
// if (current_intersectiong_entry.boundingClientRect.y < 0) { //previous selected is out of viewport
// current_intersectiong_entry.target.classList.remove('bg-blue-800');
// let res = findCorrespondingTocTitle(entry.target) //First intersection entry
// res.parentElement.classList.add('bg-blue-800');
// current_intersectiong_entry = entry
// 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');

2
static/js/page.js
View file

@ -1 +1 @@
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),n.isIntersecting){if(null===t){let e=findCorrespondingTocTitle(n.target);return e.parentElement.classList.add("bg-blue-800"),t=n,!0}if(t.boundingClientRect.y<0){t.target.classList.remove("bg-blue-800");let e=findCorrespondingTocTitle(n.target);return e.parentElement.classList.add("bg-blue-800"),t=n,!0}}console.log("after"),console.log("entry",n),console.log("current",t)})},{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=>{n.observe(e)})});
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");const t=new window.IntersectionObserver(e=>{e.some(t=>{if(console.log("before"),console.log("entry",t),t.isIntersecting){let e=findCorrespondingTocTitle(t.target);return e.parentElement.classList.add("bg-blue-800"),!0}if(!t.isIntersecting){let e=findCorrespondingTocTitle(t.target);return e.parentElement.classList.remove("bg-blue-800"),e.parentElement.nextElementSibling.classList.add("bg-blue-800"),!0}})},{root:null,threshold:.1});var n=[];[...e].forEach(e=>{n.push(e.href.substring(e.href.indexOf("#")))});const o=document.querySelectorAll(n.join(","));o.forEach(e=>{t.observe(e)})});