获取图片的base64编码
<!DOCTYPE html><html> ???<head> ???????<meta charset="UTF-8"> ???????<title></title> ???</head> ???<body> ???????<input accept="image/*" name="upimage" id="upload_file" type="file"> ???????<textarea id="base64_output" name="Word" style=" width:820px"></textarea> ???????<script type="text/javascript"> ???????????document.getElementById("upload_file").onchange = function () { ???????????????gen_base64(); ???????????}; ???????????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; ???????????????} ???????????????r.readAsDataURL(file); ???//Base64 ???????????} ???????</script> ???</body></html>JS获取图片的base64编码
原文地址：https://www.cnblogs.com/lilelile/p/10021741.html