微信小程序 Uint8Array to String 支持utf8

text-decode.js

TextEncoder:
var encoder = new TextEncoder()
    encoder.encode("中文abc🍎");
//result : Uint8Array(9) [228, 184, 173, 230, 150, 135, 97, 98, 99, 240, 159, 141, 142]
//兼容写法1：
unescape(encodeURIComponent("中文abc🍎")).split("").map(val => val.charCodeAt());
//result : (9) [228, 184, 173, 230, 150, 135, 97, 98, 99, 240, 159, 141, 142]
//兼容写法2：
encodeURIComponent("中文abc🍎").split("").map(val => val.charCodeAt());
//result : (33) [37, 69, 52, 37, 66, 56, 37, 65, 68, 37, 69, 54, 37, 57, 54, 37, 56, 55, 97, 98, 99, 37, 70, 48, 37, 57, 70, 37, 56, 68, 37, 56, 69]


TextDecoder:
var decoder = new TextDecoder();
    decoder.decode(Uint8Array.from([228, 184, 173, 230, 150, 135, 97, 98, 99, 240, 159, 141, 142]));
//result : 中文abc🍎
//兼容写法1：
decodeURIComponent(escape(String.fromCharCode(...[228, 184, 173, 230, 150, 135, 97, 98, 99, 240, 159, 141, 142])));
//result : 中文abc🍎
//兼容写法2：
decodeURIComponent(String.fromCharCode(...[37, 69, 52, 37, 66, 56, 37, 65, 68, 37, 69, 54, 37, 57, 54, 37, 56, 55, 97, 98, 99, 37, 70, 48, 37, 57, 70, 37, 56, 68, 37, 56, 69]));
//result : 中文abc🍎