为Array实现一个Reader,通过接口getReader获取,Reader 有一个接口 read(n) 每次调用会按顺序读区数组的n(默认为1)个元素,调用不会改变数组本身的值,若数组已全部读取完则返回空数组,若传入的参数不为正整数则抛出异常例:
方案一,splice Array.prototype.getReader =function() {//复制原数组let readArr = [...this];return{ read(num) {//如果有参数,判断参数if(num) {try{if(typeofnum == "string") {throwError(); }elseif(!/(^[1-9]\d*$)/.test(num)) {//正则判断正整数 /^[1-9]\d*$/throwError(); ...
返回一个 TypedArray 的视图(如 Uint8Array)。 TypedArray 是内存中的二进制数据缓冲区,允许直接操作字节。 2. 内存使用 file.slice() 内存高效:仅引用文件的某个片段,无需将整个文件加载到内存。适合处理大文件或分片上传。 FileReader.readAsArrayBuffer() 内存占用高:需将整个文件加载到内存的 ArrayBuffer 中。大...
Note that currently not *all* comments can be kept when compression is on, because of dead code removal or cascading statements into sequences. --config-file <file> Read `minify()` options from JSON file. -d, --define <expr>[=value] Global definitions. -e, --enclose [arg[:value]]...
README MIT license Security jsdom jsdom is a pure-JavaScript implementation of many web standards, notably the WHATWG DOM and HTML Standards, for use with Node.js. In general, the goal of the project is to emulate enough of a subset of a web browser to be useful for testing and scrap...
拿到emitter对象后我们分别监听它发出的fileread, found, error三个事件,一旦对应事件发生时则调用我们提供的函数,注意到on函数调用后会再返回emitter对象,于是我们能使用串链的方式来进行连续调用,上面代码运行后所得结果如下: 代码语言:javascript 代码运行次数:0 ...
Jump right into building with Bootstrap—use the CDN, install it via package manager, or download the source code. Read installation docs Install via package manager Install Bootstrap’s source Sass and JavaScript files via npm, RubyGems, Composer, or Meteor. Package-managed installs don’t ...
function networkAction(context, method, ...rest) { // rest is an array return method.apply(context, rest); } And if you don’t like calling apply(), you can just spread an array into function arguments: myArguments = ['foo', 'bar', 123]; myFunction(...myArguments); Generators...
{// read in utterancesvarentireBatch =awaitfse.readJson(config.inFile);// break items into pages to fit max batch sizevarpages = getPagesForBatch(entireBatch.utterances, config.batchSize);varuploadPromises = [];// load up promise arraypages.forEach(page=>{ config.uri ="https://westus....
Read more aboutCommonJS dependencies configuration Plus package This package provides the following features: Utilizes the gists API to highlight code snippets directly from GitHub gists. Supports direct code highlighting from URLs. Usage To integrate this addon into your project, ensure the presence of...