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rel=preload - HTML: HyperText Markup Language |...
The preload value of the element's rel attribute lets you declare fetch requests in the HTML's , specifying resources that your page will need very soon, which you want to start loading early in the page lifecycle, before browsers' main rendering machinery kicks in. This ensures they are available earlier and are less likely to block the page's render, improving performance. Even though the name contains the term load, it doesn't load and execute the Script but only schedules it to be downloaded and cached with a higher priority....doesn't load and execute the script but only schedules it to be...rel="preload" href="main.js" as="script" /> <link rel="stylesheet"...
developer.mozilla.org/en-US/docs/Web/HTML/Attri... -
CSPViolationReportBody - Web APIs | MDN
Learn about the CSPViolationReportBody interface, including its properties and methods, code examples, specifications, and browser compatibility....only The column number in the script at which the violation occurred...only The line number in the script at which the violation occurred...
developer.mozilla.org/en-US/docs/Web/API/CSPVio... -
Real User Monitoring (RUM) - MDN Web Docs Gloss...
Real User Monitoring or RUM measures the performance of a page from real users' machines. Generally, a third party Script injects a Script on each page to measure and report page load data for every request made. This technique monitors an application's actual user interactions. In RUM, the third party Script collects performance metrics from the real users' browsers. RUM helps identify how an application is being used, including the geographic distribution of users and the impact of that distribution on the end user experience....Generally, a third party script injects a script on each page to measure...interactions. In RUM, the third party script collects performance metrics...
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JavaScript modules - JavaScript | MDN
This guide gives you all you need to get started with JavaScript module syntax....early days was to do isolated scripting tasks, providing a bit of...pages where needed, so large scripts were generally not needed....
developer.mozilla.org/en-US/docs/Web/JavaScript... -
CSP: worker-src - HTTP | MDN
The HTTP Content-Security-Policy (CSP) worker-src directive specifies valid sources for Worker, SharedWorker, or ServiceWorker Scripts....SharedWorker , or ServiceWorker scripts. CSP version 3 Directive type...child-src directive, then the script-src directive, then finally...
developer.mozilla.org/en-US/docs/Web/HTTP/Heade... -
CORS settings attributes - HTML | MDN
В HTML5 некоторые теги поддерживают CORS, например
или
developer.mozilla.org/ru/docs/Web/HTML/Attribut... -
Worker - Web APIs | MDN
Learn about the Worker interface, including its properties and methods, specifications and browser compatibility....task that can be created via script, which can send messages back...the Worker("path/to/worker/script") constructor. Workers may...
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Speculation-Rules - HTTP | MDN
The HTTP Speculation-Rules response header provides one or more URLs pointing to text resources containing speculation rule JSON definitions. When the response is an HTML document, these rules will be added to the document's speculation rule set. See the Speculation Rules API for more information....definition inside an inline <script type="speculationrules"> element...that contained inside inline <script type="speculationrules"> elements...
developer.mozilla.org/en-US/docs/Web/HTTP/Heade... -
Getting started with Vue - Learn web developmen...
Let's leave this here for now. We've learned about some of the ideas behind Vue, created some scaffolding for our example app to live inside, inspected it, and made a few preliminary changes....drop one of the following <script> elements onto a page. This...data-management. Development Script (not optimized, but includes...
developer.mozilla.org/en-US/docs/Learn/Tools_an... -
Cross-site scripting (XSS) - MDN Web Docs Gloss...
Cross-site Scripting (XSS) is a security exploit which allows an attacker to inject into a website malicious client-side code. This code is executed by the victims and lets the attackers bypass access controls and impersonate users. According to the Open Web Application Security Project, XSS was the seventh most common Web app vulnerability in 2017....日本語 한국어 中文 (简体) Cross-site scripting (XSS) is a security exploit...cannot detect the malicious script is untrustworthy, and so gives...
developer.mozilla.org/en-US/docs/Glossary/Cross...