JQuery承诺和HTML表单提交

Question

如果在提交表单时有jQuery延迟对象未完成，会发生什么。是否只在加载新页面时取消它们？例如：

.box{
    position: relative;
    height: 400px;
    width: 500px;
    background-color: #ccc;
    border: 2px solid orange;
    margin: 50px 0 0 50px;
}

.box::after{
    content: " ";
    width: 20px;
    height: 20px;
    position: absolute;
    top: 10px;
    left: -12px;
    border-top: 2px solid #FFA500;
    border-left: 2px solid #FFA500;
    z-index: 1000;
    background: linear-gradient(-45deg, rgba(255,255,255,0) 12px, #CCC 12px);
    transform: rotate(-45deg);
}