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ifc-vertical-align.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Static Template</title>
<link
rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T"
crossorigin="anonymous"
/>
<style>
* {
padding: 0;
margin: 0;
}
p {
padding: 10px;
background: #519aba;
}
.operating {
text-align: center;
}
</style>
</head>
<body>
<p>几个<em>测试</em>文本</p>
<div class="operating">
设置em元素不同vertical-align:
<select class="custom-select">
<option value="top">top</option>
<option value="super">super</option>
<option value="text-top">text-top</option>
<option value="middle">middle</option>
<option value="baseline">baseline</option>
<option value="text-bottom">text-bottom</option>
<option value="sub">sub</option>
<option value="bottom">bottom</option>
</select>
</div>
</body>
<script
src="https://code.jquery.com/jquery-3.4.1.min.js"
integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
crossorigin="anonymous"
></script>
<script>
$("select").change(function() {
var str = "";
$("select option:selected").each(function() {
str += $(this).text() + " ";
});
$("em").css("vertical-align", str);
});
</script>
</html>