<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>选择文件转base64</title>
</head>
<body>
<input type="file" onchange="upimg()" id="img" multiple="multiple">
</body>
</html>
<script>
function upimg(){
var file = document.getElementById("img").files[0];
//声明js的文件流
var reader = new FileReader();
if(file){
//通过文件流将文件转换成Base64字符串
reader.readAsDataURL(file);
//转换成功后
reader.onload = function () {
var base = reader.result;
console.log(base)
}
}
}
</script>
JS_input type=“file“ 选择文件后转base64编码字符串
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转载自blog.csdn.net/weixin_44599931/article/details/108474028
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