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In PHP, HTML sanitization can be performed using the strip_tags() function at the risk of removing all textual content following an unclosed less-than symbol or angle bracket. [2] The HTML Purifier library is another popular option for PHP applications. [3] In Java (and .NET), sanitization can be achieved by using the OWASP Java HTML Sanitizer ...
CSS-in-JS is a styling technique by which JavaScript is used to style components. When this JavaScript is parsed, CSS is generated (usually as a <style> element) and attached into the DOM . It enables the abstraction of CSS to the component level itself, using JavaScript to describe styles in a declarative and maintainable way.
The user can customize fonts, colors, positions of links in the margins, and many other things! This is done through custom Cascading Style Sheets stored in subpages of the user's "User" page.
It would take JavaScript (technically, ECMAScript 5 strict mode code), HTML, and CSS input and rewrite it into a safe subset of HTML and CSS, plus a single JavaScript function with no free variables. That means the only way such a function could modify an object, was if it was given a reference to the object by the host page.
Firefox - use Tools → JavaScript Console showing all JavaScript and CSS errors. Chrome and Edge - use Tools → Developer Tools. Safari - Safari → Preferences → Advanced and enable the "Show Develop menu in menu bar" option. Then use Develop → Show Web Inspector to open up the development tools.
Stopping an XSS attack when accepting HTML input from users is much more complex in this situation. Untrusted HTML input must be run through an HTML sanitization engine to ensure that it does not contain XSS code. Many validations rely on parsing out (blacklisting) specific "at risk" HTML tags such as the iframe tag, link and the script tag.
With server-side rendering, static HTML can be sent from the server to the client, and client-side JavaScript then makes the web page dynamic by attaching event handlers to the HTML elements in a process called hydration. Examples of frameworks that support server-side rendering are Next.js, Nuxt.js, Angular, and React.
The primary use of data sanitization is for the complete clearing of devices and destruction of all sensitive data once the storage device is no longer in use or is transferred to another Information system . [12] This is an essential stage in the Data Security Lifecycle (DSL) [1] and Information Lifecycle Management (ILM). Both are approaches ...