<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Test JavaScript</title> </head> <body> <p>"JavaScript Test Page"</p> <p>Open Console log</p> <button id="button1">VideoTextureObject</button> <script> let counters = {}; // Class counters["flag"] = false; console.log(counters); console.log(Object.keys(counters).length); const button_click = document.getElementById('button1'); console.log(button_click); button_click.addEventListener('click', () => { console.log("クリックしました"); console.log(clickStartStop()); }) // 再生の切り替え // let flag = false; function clickStartStop() { if (counters["flag"] == false) { counters["flag"] = true; } else { counters["flag"] = false; } return counters["flag"]; } </script> </body> </html>