本文实例为大家分享了JavaScript实现单图片上传并预览功能的具体代码，供大家参考，具体内容如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>单图片上传并实现预览</title>
<style>
/*上传图片*/
.addPerson{
line-height: 190px;
}
.addPhoto{
width: 50px;
height: 50px;
line-height: 50px;
font-size: 40px;
text-align: center;
vertical-align: middle;
border: 1px dashed #e7eaec;
cursor: pointer;
display: inline-block;
}
.addinput{
display: none;
}
.addShow{
width: 200px;
height: 170px;
display: inline-block;
vertical-align: middle;
background: #f3f3f48f;
margin-left: 30px;
}
.addShow img{
width: 130px;
height: 130px;
margin: 20px auto;
display: block;
}
</style>
</head>
<body>
<div class=" addPerson">
<label class="col-sm-2 control-label">图片上传</label>
<div class="col-sm-9" style="display: inline-block;">
<div class="addPhoto">+</div>
<div class="addinput">
<input type="file" class="addFile" onchange="previewFile()" name="sPicture">
</div>
<div class="addShow" style="position: relative">
<img src="/UploadFiles/2021-04-02/">
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。