弹窗代码实战指南：轻松实现警告框、确认框和可拖拽模态框

// 警告框 alert("这是一个简单的弹窗");

// 确认框 let result = confirm("你确定要执行此操作吗？");

// 输入框 let username = prompt("请输入您的用户名");

alert("操作成功！");

.modal { opacity: 0; transition: opacity 0.3s ease-in-out; }

.modal.show { opacity: 1; }

document.addEventListener('click', function(event) { if (event.target === modalOverlay) {

closeModal();

} });

.modal { position: fixed; z-index: 1000; }

/ 问题可能出在这里 / .header { position: relative; z-index: 1001; / 比弹窗还高 / }

class DraggableModal { constructor(modal) {

this.modal = modal;
this.isDragging = false;
this.offset = { x: 0, y: 0 };

this.init();

}

init() {

const header = this.modal.querySelector('.modal-header');
header.style.cursor = 'move';

header.addEventListener('mousedown', this.startDrag.bind(this));
document.addEventListener('mousemove', this.drag.bind(this));
document.addEventListener('mouseup', this.stopDrag.bind(this));

}

startDrag(e) {

this.isDragging = true;

const rect = this.modal.getBoundingClientRect();
this.offset.x = e.clientX - rect.left;
this.offset.y = e.clientY - rect.top;

this.modal.style.transition = 'none'; // 拖拽时禁用动画

}

drag(e) {

if (!this.isDragging) return;

const x = e.clientX - this.offset.x;
const y = e.clientY - this.offset.y;

this.modal.style.left = `${x}px`;
this.modal.style.top = `${y}px`;

}

stopDrag() {

this.isDragging = false;
this.modal.style.transition = ''; // 恢复动画

} }