From 74eb196a74f410754cd0ac3300ac432463df90b9 Mon Sep 17 00:00:00 2001
From: Andinus <andinus@nand.sh>
Date: Sun, 26 Sep 2021 17:21:15 +0530
Subject: Add landing page

---
 landing/assets/js/main.js | 126 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 landing/assets/js/main.js

(limited to 'landing/assets/js/main.js')

diff --git a/landing/assets/js/main.js b/landing/assets/js/main.js
new file mode 100644
index 0000000..8d0c8da
--- /dev/null
+++ b/landing/assets/js/main.js
@@ -0,0 +1,126 @@
+
+(function() {
+  "use strict";
+
+
+  const select = (el, all = false) => {
+    el = el.trim()
+    if (all) {
+      return [...document.querySelectorAll(el)]
+    } else {
+      return document.querySelector(el)
+    }
+  }
+
+
+  const on = (type, el, listener, all = false) => {
+    let selectEl = select(el, all)
+    if (selectEl) {
+      if (all) {
+        selectEl.forEach(e => e.addEventListener(type, listener))
+      } else {
+        selectEl.addEventListener(type, listener)
+      }
+    }
+  }
+
+
+  const onscroll = (el, listener) => {
+    el.addEventListener('scroll', listener)
+  }
+
+
+  let navbarlinks = select('#navbar .scrollto', true)
+  const navbarlinksActive = () => {
+    let position = window.scrollY + 200
+    navbarlinks.forEach(navbarlink => {
+      if (!navbarlink.hash) return
+      let section = select(navbarlink.hash)
+      if (!section) return
+      if (position >= section.offsetTop && position <= (section.offsetTop + section.offsetHeight)) {
+        navbarlink.classList.add('active')
+      } else {
+        navbarlink.classList.remove('active')
+      }
+    })
+  }
+  window.addEventListener('load', navbarlinksActive)
+  onscroll(document, navbarlinksActive)
+
+
+  const scrollto = (el) => {
+    let header = select('#header')
+    let offset = header.offsetHeight
+
+    let elementPos = select(el).offsetTop
+    window.scrollTo({
+      top: elementPos - offset,
+      behavior: 'smooth'
+    })
+  }
+
+
+  let backtotop = select('.back-to-top')
+  if (backtotop) {
+    const toggleBacktotop = () => {
+      if (window.scrollY > 100) {
+        backtotop.classList.add('active')
+      } else {
+        backtotop.classList.remove('active')
+      }
+    }
+    window.addEventListener('load', toggleBacktotop)
+    onscroll(document, toggleBacktotop)
+  }
+
+
+  on('click', '.mobile-nav-toggle', function(e) {
+    select('#navbar').classList.toggle('navbar-mobile')
+    this.classList.toggle('bi-list')
+    this.classList.toggle('bi-x')
+  })
+
+
+  on('click', '.navbar .dropdown > a', function(e) {
+    if (select('#navbar').classList.contains('navbar-mobile')) {
+      e.preventDefault()
+      this.nextElementSibling.classList.toggle('dropdown-active')
+    }
+  }, true)
+
+
+  on('click', '.scrollto', function(e) {
+    if (select(this.hash)) {
+      e.preventDefault()
+
+      let navbar = select('#navbar')
+      if (navbar.classList.contains('navbar-mobile')) {
+        navbar.classList.remove('navbar-mobile')
+        let navbarToggle = select('.mobile-nav-toggle')
+        navbarToggle.classList.toggle('bi-list')
+        navbarToggle.classList.toggle('bi-x')
+      }
+      scrollto(this.hash)
+    }
+  }, true)
+
+
+  window.addEventListener('load', () => {
+    if (window.location.hash) {
+      if (select(window.location.hash)) {
+        scrollto(window.location.hash)
+      }
+    }
+  });
+
+
+  window.addEventListener('load', () => {
+    AOS.init({
+      duration: 1000,
+      easing: "ease-in-out",
+      once: true,
+      mirror: false
+    });
+  });
+
+})()
-- 
cgit 1.4.1-2-gfad0