AJAX——综合案例
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.js
2. 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').value
console.log('模拟把姓名保存到服务器上', username)
// 2. 隐藏弹框
modal.hide()
})
</script>
</body>
</html>