我可以阻止在执行AJAX调用时调用window.onbeforeunload

var onbeforeunload = window.onbeforeunload;
window.onbeforeunload = null;

// 发起AJAX调用

window.onbeforeunload = onbeforeunload;

var onbeforeunload = window.onbeforeunload;
window.onbeforeunload = null;

$.ajax({
  url: "example.com/ajax",
  type: "POST",
  data: {
    // 请求数据
  },
  beforeSend: function() {
    window.onbeforeunload = null;
  },
  complete: function() {
    window.onbeforeunload = onbeforeunload;
  },
  success: function(data) {
    // 处理成功的响应
  },
  error: function(xhr, status, error) {
    // 处理错误响应
  }
});