微信小程序base64编码解码以及utf-8解码
function base64_encode (str) { // 编码,配合encodeURIComponent使用 var c1, c2, c3; var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; var i = 0, len = str.l...