小程序String转ArrayBuffer

JS String转ArrayBuffer

var u8array = new TextEncoder("utf-8").encode("Hello World");
var string = new TextDecoder().decode(u8array);
var buff = u8array.buffer;

小程序String转ArrayBuffer

微信小程序不支持TextEncoder，String转ArrayBuffer可用方法如下：

var u8array = unescape(encodeURIComponent("Hello World")).split("").map(val => val.charCodeAt());
var buff = u8array.buffer;