我试图通过Jquery animate函数更改bootstrap jumbotron。但这不起作用。我希望点击动画按钮后，jumbotron大小将增加一半的屏幕。
<div class="content">
<div class="jumbotron jumbotron-fluid">
<div class="container">
<div class="display-4">
<div class="display-4 heading">JQuery Practice</div>
<p class="lead">
This is Jquery Practice Session. Jquery is a javascript
library to make developers life better.
Let's make our jQuery learning fun.
</p>
</div>
</div>
</div>
</div>
<div class="d-flex justify-content-center">
<div class="p-2">
<button type="button" class="btn btn-success" id="animate">Animate</button>
</div>
</div>
而jQuery是：
$(document).ready(function() {
$("animate").click(function() {
$("jumbotron").animate({
height:50vh
});
});
});
这是你使用jQuery slim而不是实际的jQuery。此外，你没有正确选择元素，因为animate是一个id而jumbotron是一个类。请检查工作代码的此codepen链接：
https://codepen.io/rohitmittal/pen/VRgVEP
希望它能帮到你。
$(document).ready(function(){
$("#animate").click(function(){
$(".jumbotron").animate({
height: "50vh"
});
});
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<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">
<title>Hello, world!</title>
</head>
<body>
<div class="content">
<div class="jumbotron jumbotron-fluid">
<div class="container">
<div class="display-4">
<div class="display-4 heading">JQuery Practice</div>
<p class="lead">
This is Jquery Practice Session.Jquery is a javascript library to make developers life better.
Let's make our jquery learning fun.
</p>
</div>
</div>
</div>
</div>
<div class="d-flex justify-content-center">
<div class="p-2">
<button type="button" class="btn btn-success" id="animate">Animate</button>
</div>
</div>
</body>
</html>据我所知，你想要animate jombotron div的高度。试试这段代码，
$("#animate").click(function(){
$(".jumbotron").animate({
height: "50vh"
});
});