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<!DOCTYPE html>
<html lang="ZH-CN">
<head>
<meta charset="utf-8">
<title>移动端唤醒相机拍照/图片预览/上传</title>
<style>
</style>
</head>
<body>
<div class="booth">
<!--
accept="image/*" 规定上传文件的类型，只支持图片
capture="camera" 打开系统照相机进行拍照，触发
onchange事件
至于input是否好看，自己百度看如何美化...
-->
<input type="file" accept="image/*" onchange="getImageFile(event)" capture="camera">
<img id='img' src=''>
</div>
<script>
function getImageFile (e) {
// FileReader 方法参考地址：https://developer.mozilla.org/zh-CN/docs/Web/API/FileReader
let reader = new FileReader();
// readAsDataURL 方法参考地址：https://developer.mozilla.org/zh-CN/docs/Web/API/FileReader/readAsDataURL
reader.readAsDataURL(e.target.files[0])
// 监听读取操作结束
reader.onloadend = function () {
// 取出base64代码
var dataURL = reader.result;
// 赋值到图片上显示出来
document.getElementById("img").src = dataURL
};
}
</script>
</body>
</html>