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1 Bootstrap弹框
功能：不离开当前页面，显示单独内容，供用户操作
步骤：
- 引入bootstrap.css和bootstrap.js
- 准备弹框标签，确认结构
- 通过自定义属性，控制弹框的显示和隐藏
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Bootstrap 弹框</title><!-- 引入bootstrap.css --><link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css" rel="stylesheet">
</head><body><!-- 目标：使用Bootstrap弹框1. 引入bootstrap.css 和 bootstrap.js2. 准备弹框标签，确认结构3. 通过自定义属性，控制弹框的显示和隐藏--><button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target=".my-box">显示弹框</button><!-- 弹框标签bootstrap的modal弹框，添加modal类名（默认隐藏）--><div class="modal my-box" tabindex="-1"><div class="modal-dialog"><!-- 弹框-内容 --><div class="modal-content"><!-- 弹框-头部 --><div class="modal-header"><h5 class="modal-title">Modal title</h5><button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button></div><!-- 弹框-身体 --><div class="modal-body"><p>Modal body text goes here.</p></div><!-- 弹框-底部 --><div class="modal-footer"><button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button><button type="button" class="btn btn-primary">Save changes</button></div></div></div></div><!-- 引入bootstrap.js --><script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/js/bootstrap.min.js"></script>
</body></html>2 Bootstrap弹框使用-js控制显示和隐藏
1.通过属性控制，弹框显示或隐藏 单纯显示/隐藏
2.通过JS控制，弹框显示或隐藏 额外逻辑代码
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Bootstrap 弹框</title><!-- 引入bootstrap.css --><link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css" rel="stylesheet">
</head><body><!-- 目标：使用JS控制弹框，显示和隐藏1. 创建弹框对象2. 调用弹框对象内置方法.show() 显示.hide() 隐藏--><button type="button" class="btn btn-primary edit-btn">编辑姓名</button><div class="modal name-box" tabindex="-1"><div class="modal-dialog"><div class="modal-content"><div class="modal-header"><h5 class="modal-title">请输入姓名</h5><button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button></div><div class="modal-body"><form action=""><span>姓名：</span><input type="text" class="username"></form></div><div class="modal-footer"><button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button><button type="button" class="btn btn-primary save-btn">保存</button></div></div></div></div><!-- 引入bootstrap.js --><script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/js/bootstrap.min.js"></script><script> // 1. 创建弹框对象const modalDom = document.querySelector('.name-box')const modal = new bootstrap.Modal(modalDom)// 编辑姓名->点击->赋予默认姓名->弹框显示document.querySelector('.edit-btn').addEventListener('click', () => {document.querySelector('.username').value = '默认姓名'// 2. 显示弹框modal.show()})// 保存->点击->->获取姓名打印->弹框隐藏document.querySelector('.save-btn').addEventListener('click', () => {const username = document.querySelector('.username').valueconsole.log('模拟把姓名保存到服务器上', username)// 2. 隐藏弹框modal.hide()})</script>
</body></html>