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This web request can be crafted to include URL parameters, cookies and other data that appear normal to the web server processing the request. At risk are web applications that perform actions based on input from trusted and authenticated users without requiring the user to authorize (e.g. via a popup confirmation) the specific action.
Tells the browser to refresh the page or redirect to a different URL, after a given number of seconds (0 meaning immediately); or when a new resource has been created [clarification needed]. Header introduced by Netscape in 1995 and became a de facto standard supported by most web browsers. Eventually standardized in the HTML Living Standard in ...
The client may then decide to cache the representation, along with its ETag. Later, if the client wants to retrieve the same URL resource again, it will first determine whether the locally cached version of the URL has expired (through the Cache-Control and the Expire headers). If the URL has not expired, it will retrieve the locally cached ...
Angular 2.0 was announced at the ng-Europe conference 22–23 October 2014. [17] On April 30, 2015, the Angular developers announced that Angular 2 moved from Alpha to Developer Preview. [18] Angular 2 moved to Beta in December 2015, [19] and the first release candidate was published in May 2016. [20] The final version was released on 14 ...
For HTTP requests made from JavaScript that can't be made by using a <form> tag pointing to another domain or containing non-safelisted headers, the specification mandates that browsers "preflight" the request, soliciting supported methods from the server with an HTTP OPTIONS request method, and then, upon "approval" from the server, sending ...
In a DOM-based XSS attack, the malicious data does not touch the web server. Rather, it is being reflected by the JavaScript code, fully on the client side. [15] An example of a DOM-based XSS vulnerability is the bug found in 2011 in a number of jQuery plugins. [16]
When a web page is loaded, the browser creates a Document Object Model of the page, which is an object oriented representation of an HTML document that acts as an interface between JavaScript and the document itself. This allows the creation of dynamic web pages, [13] because within a page JavaScript can:
With Ajax, web applications can send and retrieve data from a server asynchronously (in the background) without interfering with the display and behaviour of the existing page. By decoupling the data interchange layer from the presentation layer, Ajax allows web pages and, by extension, web applications, to change content dynamically without ...