// JavaScript Document document.addEventListener("DOMContentLoaded", function () { const elem = document.querySelector(".js-target-parallax"); if (elem !== null) { //クラス名js-target-parallaxがあるか判定 let target = document.getElementsByClassName("js-target-parallax"); //クラス名js-target-parallaxがある要素をすべて取得 let parallaxConfig = { //simpleParallaxの設定 delay: 0, orientation: "down", scale: 1.4, //overflow: true, //必要なら //maxTransition : 50 //必要なら }; const parallax_instance = new simpleParallax(target, parallaxConfig); } });