可变高度div内的静止图像

Question

我有一个高度可变的div，这个高度是通过javascript更改的，我需要将里面的图像始终固定在页脚中。

$(document).ready(function(){
$("#btn1").click(function(){
$(".content").append("<br><br>Appended text</b>");
});
});

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<div class="container-fluid" style="background:url('https://place-hold.it/2000x700');background-size:cover;">
	<div class="container">
		<div class="row">
			<div class="col-lg-8 col-8 content">	
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			</div>
				<div class="col-lg-4 col-4 slide_home_person" style="">
					<img src="https://place-hold.it/100x100/111/fff.png/000" class="slide_image_person" width="100%">
				</div>			
		</div>
	</div>
</div>
<button id="btn1">Append text</button>

https://jsfiddle.net/sNniffer/7zLeuhjm/2/

Answer 1

您可以尝试将属性position: absolute添加到类slide_image_person：

$(document).ready(function(){
$("#btn1").click(function(){
$(".content").append("<br><br>Appended text</b>");
});
});

.slide_image_person {
bottom: 0px;
position: absolute;
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container">
<div class="row">
<div class="col-lg-8 col-8 content">    
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</div>
<div class="col-lg-4 col-4 slide_home_person" style="">
<img src="https://place-hold.it/100x100/111/fff.png/000" class="slide_image_person" width="100%">
</div>          
</div>
</div>
</div>
<button id="btn1">Append text</button>

Answer 2

将position: absolute;添加到 CSS

.slide_image_person {
position: absolute;
bottom: 0;
}