JSFiddle - React, Tailwind, and code Playground

HTML

<input height="69" name="image" src="" type="image" width="70" >

JavaScript

var today = new Date(); //取得現在時間
var someday = new Date(2021, 7, 30); //設定時間為2021/08/30
if (someday < today) {
    $("input[name=image]").prop("src", "https://free.com.tw/blog/wp-content/uploads/2015/03/Google-%E6%8E%A8%E5%87%BA-Data-Saver-%E6%A1%8C%E9%9D%A2%E7%89%88%E8%AE%93%E4%BD%A0%E4%B8%8A%E7%B6%B2%E9%80%9F%E5%BA%A6%E6%9B%B4%E5%BF%AB%E3%80%81%E9%99%8D%E4%BD%8E%E6%B5%81%E9%87%8F%E8%80%97%E8%B2%BB%EF%BC%81%EF%BC%88Chrome-%E6%93%B4%E5%85%85%E5%8A%9F%E8%83%BD%EF%BC%89Google_Chrome_icon_2011.png");// 圖片路徑
} else {
    $("input[name=image]").prop("src", "https://www.mozilla.org/media/protocol/img/logos/firefox/browser/logo-lg-high-res.fbc7ffbb50fd.png");// 圖片路徑
}