App上window.bota函数无效，求一个app上可用的arrayBuffer转base64的代码，十分感谢

卢融霜_

util.str2ab = (str) => {  
        let val = ""  
        for (let i = 0; i < str.length; i++) {  
          if (val === '') {  
            val = str.charCodeAt(i).toString(16)  
          } else {  
            val += ',' + str.charCodeAt(i).toString(16)  
          }  
        }  
        return new Uint8Array(val.match(/[\da-f]{2}/gi).map(function (h) {  
          return parseInt(h, 16)  
        })).buffer  
}

2***@qq.com

8***@qq.com

5***@qq.com

卢融霜_

var key = uni.arrayBufferToBase64(util.str2ab(value))

util.str2ab = (str) => {  
    var buf = new ArrayBuffer(str.length * 2);   
    var bufView = new Uint16Array(buf);  
    for (var i = 0, strLen = str.length; i < strLen; i++) {  
        bufView[i] = str.charCodeAt(i);  
    }  
    return buf;  
}