1.運行效果如圖所示
![wKiom1ko3ROSNlr2AABDphTjpcI899.png-wh_50]( "QQ截圖20170527095700.png")
2.實現代碼如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>模態彈出框</title>
<!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
<link rel="stylesheet"
href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"
integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
crossorigin="anonymous">
<!-- 可選的 Bootstrap 主題文件（一般不用引入） -->
<link rel="stylesheet"
href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css"
integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp"
crossorigin="anonymous">
</head>
<body>
<button class="btn btn-primary" data-toggle="modal"
data-target=".bs-example-modal-lg">模態彈出窗</button>
<div class="modal fade bs-example-modal-lg" tabindex="-1"
role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">
<span aria-hidden="true">×</span><span class="sr-only">
Close</span></button>
<h4 class="modal-title">模態彈出窗標題</h4>
</div>
<div class="modal-body">
<p>模態彈出窗主體內容</p>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">
關閉</button>
<button type="button" class="btn btn-primary">保存</button>
</div>
</div>
</div>
</div>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"
integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa"
crossorigin="anonymous"></script>
</body>
</html>
