In previous article, I have mentioned, how to read excel file in javascript, read pdf using javascript, now in this article, I have mentioned, how to read json file with javascript or you can say how to read json in javascript and how to parse json in javascript. Let's consider this ...
AI代码解释 constfs=require('fs');constpath=require('path');constpostsUrl=path.join(__dirname,'db/posts.json');constcommentsUrl=path.join(__dirname,'db/comments.json');//return the data from our filefunctionloadCollection(url,callback){fs.readFile(url,'utf8',function(error,data){if(err...
readFile('pathToDirectory', (err, data) => { if (err) throw err console.log(data) }) // Callbacks in ExpressJS app.get('/', (req, res) => res.sendFile(index.html)) 这就是它(异步)的回调!? 希望你清楚callbacks是什么以及现在如何使用它们。在开始的时候,你不会创建很多回调,所以要...
JSON复制 {"value": [ {"id":"123456","name":"document1.docx","size":12340,"@microsoft.graph.downloadUrl":"https://contoso-my.sharepoint.com/download.aspx?guid=1231231231a","webUrl":"https://cotoso-my.sharepoint.com/personal/user_contoso_com/documents/document1.docx","thumbnails": [...
It is easy for humans to read and write and for machines to parse and generate. The official Internet media type for JSON is application/json. The JSON filename extension is .json. In our examples, we use JSON data from http://time.jsontest.com. ...
_read = () => {}; // 必须实现_read方法 // 生成数据流 const data = 'Hello from JavaScript!\n'; readableStream.push(data); readableStream.push(null); // 表示流的结束 // 发送数据流 const form = new FormData(); form.append('file', readableStream); const response = await fetch('...
/*** Parses a JSON file.** @param path - Full path to the file.* @returns An object containing the JSON data.** @example Parsing a basic JSON file** # Contents of `file.json`* ```json* {* "exampleItem": "text"* }* ```** # Usage* ```ts* const result = parseFile("...
(msg);60}6162/*解析http响应63* 当响应到达时,把它以解析后的XML document对象、解析后的json对象64* 或字符串形式传递给回调函数*/65functionget(url, callback){66varrequest =newXMLHttpRequest();//新请求6768request.open("GET", url);69request.onreadystatechange =function(){70if(request.readyState...
path:"test.txt"syscall:"open"errno:-9 使用Bun.file(),可以在特定路径下轻松加载文件: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // Bun (index.ts)constfile=Bun.file("test.txt");constcontents=awaitfile.text();// Node.jsconstfsPromises=require('fs').promises;asyncfunctionreadFile(fi...
在这段代码中,readFile是一个构造函数,它读取一个文件并将其内容作为字符串返回。标准的 JavaScript 没有提供这样的功能,但是不同的 JavaScript 环境(如浏览器和 Node.js)提供了自己的访问文件的方式。这个例子只是假设readFile存在。 为了避免多次加载相同的模块,require需要保存(缓存)已经加载的模块。被调用时,它首...