@文心快码js uint8array 转base64 文心快码 在JavaScript中,将Uint8Array转换为Base64编码字符串可以通过以下步骤实现: 创建Uint8Array对象: 如果尚未提供Uint8Array对象,可以先创建一个。例如,可以创建一个包含ASCII码对应字符的Uint8Array。 javascript const uint8Array = new Uint8Array([72, 101, 108, 108,...
byteLength:10[[Prototype]]: ArrayBuffer[[Int8Array]]: Int8Array(10)[[Uint8Array]]: Uint8Array(10)[[Int16Array]]: Int16Array(5)[[ArrayBufferByteLength]]:10[[ArrayBufferData]]:1367 AI代码助手复制代码 可以看到在ArrayBuffer中,主要存放了几个“视图”,Int8Array表示8位有符号整数数组,Int16Array...
js 二进制数组转base64 arrayBufferToBase64 = ( buffer ) => { var binary = ''; var bytes = new Uint8Array( buffer ); var len = bytes.byteLength; for (var i = 0; i < len; i++) { binary += String.fromCharCode( bytes[ i ] ); } return window.btoa( binary ); }...
document.getElementById(imgId).src = url;*//*方法3 数组 方法 outputImg.src = 'data:image/png;base64,' + arrayBufferToBase64(obj.arry); function arrayBufferToBase64(buffer) { var binary = ''; var bytes = new Uint8Array(buffer); var len = bytes.byteLength; for (var i = 0; i ...
3.Uint8Array转base64 /** * uint8array数组转为base64字符串 */ constuint8arrayToBase64=function(u8Arr) { try{ letCHUNK_SIZE=0x8000;//arbitrary number letindex=0; letlength=u8Arr.length; letresult=''; letslice; while(index<length) { ...
/** Convert data (an array of integers) to a Base64 string. */ var toBase64Table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; var base64Pad = '='; function toBase64(data) { var result = ''; var length = data.length; ...
length, u8arr = new Uint8Array(n); while(n--){ u8arr[n] = bstr.charCodeAt(n); } return new File([u8arr], fileName, {type:mime}); } 2,url转base64 /** * url转base64 * @param {String} url - url地址 */ urlToBase64(url) { return new Promise ((resolve,reject) => {...
charAt((binarray[i >> 2] >> ((3 - i % 4) * 8)) & 0xF); } return str; } function binb2b64(binarray) { var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; var str = ""; for (var i = 0; i < binarray.length * 4; i += 3) { var triplet =...
res += code[parseInt(right,2)];//根据题目要求,去掉=res +=newArray((6- tail)/2+1).join('='); }returnres; }String.prototype.fromBase64=function(){//base64 转字符串,反过来即可letcode ='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';letstr =this,res ='',binaryStr =...
function stringToBase64(str) { // 创建一个 Uint8Array const uint8Array = new TextEncoder().encode(str); // 使用 btoa() 函数进行编码 return btoa(String.fromCharCode.apply(null, uint8Array)); } // 例子 const myString = "你好,世界!"; ...