function stringToUint8Array(str) { // 获取字符串长度 const length = str.length; // 创建一个空的Uint8Array对象 const uint8Array = new Uint8Array(length); // 遍历字符串中的每个字符 for (let i = 0; i < length; i++) { // 获取字符的Unicode编码 const charCode = str.charCodeAt(...
function arrayBufferToString(arr){ if(typeof arr === 'string') { return arr; } var dataview=new DataView(arr.data); var ints=new Uint8Array(arr.data.byteLength); for(var i=0;i<ints.length;i++){ ints[i]=dataview.getUint8(i); } arr=ints; var str = '', _arr = arr; ...
} }functionstring2buffer(str) { let val= ""for(let i = 0; i < str.length; i++) { val+= ',' +code2utf8(str.charCodeAt(i)) } val+= ',00'; console.log(val);//将16进制转化为ArrayBufferreturnnewUint8Array(val.match(/[\da-f]{2}/gi).map(function(h) {returnparseInt(h, ...
}//It's an array; check it is a valid representation of a byteif(Array.isArray(arg)) {if(!checkInts(arg)) {thrownewError('Array contains invalid value: ' +arg); }returnnewUint8Array(arg); }//Something else, but behaves like an array (maybe a Buffer? Arguments?)if(checkInt(arg...
returnString.fromCharCode.apply(null,newUint8Array(arrayBuffer)); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 3.字符串转ArrayBuffer /** * 将字符串转类型化数组 */ functionstr2ab(str) { varbuf=newArrayBuffer(str.length*2);// 每个字符占用2个字节 ...
在JavaScript中,与RS485设备(或任何硬件设备)通信时使用Uint8Array而不是直接使用查询报文字符串(如"01 03 00 00 00 14 45 C5")的原因涉及到数据类型和通信协议的需求。以下是主要原因: 1.二进制数据传输 通信协议:RS485和许多其他硬件通信协议使用二进制格式进行数据交换。这意味着每个指令或消息由一系列二进制...
问node.js节点-red-将Base64字符串转换为uint8arrayEN直接上代码： var img = "imgurl";//imgurl ...
function Uint8ArrayToString(fileData){ var dataString = "";for (var i = 0; i < fileData.length; i++) { dataString += String.fromCharCode(fileData[i]);} return dataString } 字符串转Uint8Array function stringToUint8Array(str){ var arr = [];for (var i = 0, j = str.length;...
Returns the binary equivalent of the argument, encoded using UTF-8. nacl.encode_latin1(String) → Uint8Array Returns the binary equivalent of the argument, encoded using Latin1 (an 8-bit clean encoding). If any of the character codes in the argument string are greater than 255, an excepti...