The FileReader API lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer, using File or Blob objects to specify the file or data to read. As well as this, it can also be used to test addressed nodes within a document to determine whether they match a pattern or not. XPath stands for XML Path Language, it uses a non-XML syntax that provides a flexible way of addressing (pointing to) different parts of an XML document. How to parse an XML document from a string, a file or via javascript and how to serialize XML documents to strings, Javascript Object trees (JXON) or files.
Its primary purpose is to facilitate the sharing of data across different systems, particularly systems connected via the Internet.
It is a simplified subset of SGML, capable of describing many different kinds of data. The Extensible Markup Language (XML) is a W3C-recommended general-purpose markup language for creating special-purpose markup languages. This article will show some Ajax I/O techniques. The response property will contain the entity body according to responseType, as an ArrayBuffer, Blob, Document, JSON, or string. Possible values are the empty string (default), arraybuffer, blob, document, json, and text. The responseType property of the XMLHttpRequest object can be set to change the expected response type from the server. This article provides a working (minimalist) example of a pure-Ajax website composed only of three pages. These incoming messages can be treated as Events + data inside the web page. With server-sent events, it's possible for a server to send new data to a web page at any time, by pushing messages to the web page. Traditionally, a web page has to send a request to the server to receive new data that is, the page requests data from the server. It will seem familiar to anyone who has used XMLHTTPRequest, but this API provides a more powerful and flexible feature set. The Fetch API provides an interface for fetching resources.
Submitting forms and upload binary files – in pure Ajax, or using FormData objects.Analyzing and manipulating the response of the server.This article will explain how to use some Ajax techniques, like: The XMLHttpRequest API is the core of Ajax. This article guides you through the Ajax basics and gives you two simple hands-on examples to get you started.
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