提交按钮在通过Ajax提交表单后冻结

document.getElementById("submitBtn").disabled = true;

document.getElementById("submitBtn").style.display = "none";

var submitBtn = document.getElementById("submitBtn");
submitBtn.innerHTML = "已提交";
submitBtn.style.cursor = "not-allowed";

$.ajax({
  url: "submit.php",
  type: "POST",
  data: $("#myForm").serialize(),
  success: function(response) {
    // 表单提交成功后的处理逻辑
    // 冻结提交按钮
    $("#submitBtn").prop("disabled", true);
  },
  error: function(xhr, status, error) {
    // 表单提交失败后的处理逻辑
  }
});

var xhr = new XMLHttpRequest();
xhr.open("POST", "submit.php", true);
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.onreadystatechange = function() {
  if (xhr.readyState === 4 && xhr.status === 200) {
    // 表单提交成功后的处理逻辑
    // 冻结提交按钮
    document.getElementById("submitBtn").disabled = true;
  } else {
    // 表单提交失败后的处理逻辑
  }
};
xhr.send($("#myForm").serialize());