你好，我有這個(gè) ajax 表單，它返回一個(gè)控制“發(fā)送”動(dòng)畫的腳本。然而，當(dāng)?shù)腴_始時(shí)，它會(huì)以 0.1 的不透明度停止。我不確定腳本中有什么問題。任何幫助，將不勝感激。quote_form = document.getElementsByClassName('quote-form')[0];var timer = setInterval(function () {  if (!quote_form.style.opacity) {      quote_form.style.opacity = 1;  }  if (quote_form.style.opacity > 0) {      quote_form.style.opacity -= 0.1;  } else {    clearInterval(timer);      quote_form.innerHTML = '<p>Thank you for answering this graphic design quote questionnaire! You should receive a confirmation email shortly</p>'      var timer2 = setInterval(function () {        if (quote_form.style.opacity != 1){            quote_form.style.opacity += 0.1;        } else {            clearInterval(timer2);        }      }, 50);  }}, 50);控制臺(tái)中沒有顯示錯(cuò)誤。您可以在此頁面嘗試代碼：https://tester.desertsunstudio.com/el-paso-graphic-design-quote-texas-southwest-united-states-web-developer-graphic-designer-desert-sun-studio