<!DOCTYPE html>
<html>
<head>
<meta charset="gbk">
<title></title>
</head>
<body>
<input accept="image/*" name="upimage" id="upload_file" type="file" onchange="gen_base64()">
<br/>
<textarea id="base64_output" name="Word" style=" width:820px"></textarea>
<br/>
<img src="" id="myImg" />
<script type="text/javascript">
function $_(id) {
return document.getElementById(id);
}
function gen_base64() {
var file = $_('upload_file').files[0];
r = new FileReader(); //本地预览
r.onload = function(){
$_('base64_output').value = r.result;
$_('myImg').src= r.result;
}
r.readAsDataURL(file); //Base64
}
</script>
</body>
</html>以上就是JS获取图片base64值的详细内容，更多关于JS获取图片base64值的资料请关注九品源码其它相关文章！