sparnatural/docs/assets/js/demo.js

Visual client-side SPARQL query builder and knowledge graph exploration tool

/**
* Template Name: Avilon - v4.0.1
* Template URL: https://bootstrapmade.com/avilon-bootstrap-landing-page-template/
* Author: BootstrapMade.com
* License: https://bootstrapmade.com/license/
*/
(function() {
  "use strict";

  /**
   * Easy selector helper function
   */
  const select = (el, all = false) => {
    el = el.trim()
    if (all) {
      return [...document.querySelectorAll(el)]
    } else {
      return document.querySelector(el)
    }
  }

  /**
   * Easy event listener function
   */
  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)
      }
    }
  }

  /**
   * Easy on scroll event listener 
   */
  const onscroll = (el, listener) => {
    el.addEventListener('scroll', listener)
  }

  /**
   * Back to top button
   */
  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)
  }

  /**
   * Mobile nav toggle
   */
  on('click', '.mobile-nav-toggle', function(e) {
    select('#navbar').classList.toggle('navbar-mobile')
    this.classList.toggle('bi-list')
    this.classList.toggle('bi-x')
  })

  /**
   * Mobile nav dropdowns activate
   */
  on('click', '.navbar .dropdown > a', function(e) {
    if (select('#navbar').classList.contains('navbar-mobile')) {
      e.preventDefault()
      this.nextElementSibling.classList.toggle('dropdown-active')
    }
  }, true)

  /**
   * Scrool with ofset on links with a class name .scrollto
   */
  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)

  /**
   * Scroll with ofset on page load with hash links in the url
   */
  window.addEventListener('load', () => {
    if (window.location.hash) {
      if (select(window.location.hash)) {
        scrollto(window.location.hash)
      }
    }
  });


})()