MDN StringView 库 这些的替代方法是使用 StringView 库(许可为 lgpl-3.0),其目标是: 基于 JavaScript ArrayBuffer 接口 创建一个高度可扩展的库,任何人都可以通过向对象 StringView.prototype 添加方法来扩展它 为此类字符串对象(从现在开始:stringViews)创建一组方法,这些对象严格在数字数组上工作 而不是创建新的...
false),hexValue=Number(first4Byte).toString(16);switch(hexValue){case'FFD8FFE0':case'FFD8FFE1':case'FFD8FFE2':case'FFD8FFE3':console.log('is JPEG/JPG');break;default:console.log('undefined');break;}}FR.readAsArrayBuffer(file)
}functionbytesToBase64(bytes){returnbase64ArrayBuffer(bytes); }//Convert a byte array to a hex stringfunctionbytesToHex(bytes) {for(varhex = [], i = 0; i < bytes.length; i++) { hex.push((bytes[i]>>> 4).toString(16)); hex.push((bytes[i]& 0xF).toString(16)); }returnhex....
}functionbytesToBase64(bytes){returnbase64ArrayBuffer(bytes); }// Convert a byte array to a hex stringfunctionbytesToHex(bytes) {for(varhex = [], i =0; i < bytes.length; i++) { hex.push((bytes[i] >>>4).toString(16)); hex.push((bytes[i] &0xF).toString(16)); }returnhex....
return !!window.ArrayBuffer; })(); /** * 字节流处理实体类 * @param {String|Array} array 初始化字节流,如果是字符串则按照UTF8的格式写入缓冲区 * @constructor */ function Stream(array) { if (!(this instanceof Stream)) { return new Stream(array); ...
// 将字节数组写入 ArrayBuffer 中 const uint8Array = new Uint8Array(buffer); bytes.forEach((byt...
view.setUint32(0,length);// 将长度放置在字符串的头部utfx.encodeUTF16toUTF8(stringSource(str),function(b) { view.setUint8(offset++,b); }.bind(this)); 通过上面的示例,我们就已经将一个二进制数据根据UTF-8编码后放入了ArrayBuffer中,同时,将其长度作为一个Unsigned Int类型存储在了二进制头部4个...
2019-12-11 17:03 −/* * 字节编码转换 * 首先都需要转为二级制数组 (ArrayBuffer) * 然后才能转换对应的编码字符 * 前端常见编码: * base64:就是将二进制转为字符串,将每6个字节转为一个特定的字符串(A-Za-z0-9/+=)。 * hex:将二进制每8个字节转为对应的2个十六进制的字符... ...
Using an ArrayBuffer: JavaScript Copy async function streamToJavaScript(streamRef) { const data = await streamRef.arrayBuffer(); } Using a ReadableStream: JavaScript Copy async function streamToJavaScript(streamRef) { const stream = await streamRef.stream(); } In C# code: C# Copy ...
The result is returned as a JavaScriptArrayBufferobject. readline() reads one line of input from the input stream The result is returned as a String. Object Object.prototype.__defineGetter__(prop, func) defines thepropproperty ofthisto be the getter functionfunc ...