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  1. Classes - JavaScript | MDN

    Classes are a template for creating objects. They encapsulate data with code to work on that data. Classes in Js are built on prototypes but also have some syntax and semantics that are unique to classes.... Classes in JS are built on prototypes but also...expression or a class declaration . js // Declaration class Rectangle...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
  2. HTMLMediaElement: waiting event - Web APIs | MDN

    Learn about the waiting event, including its type and syntax, code examples, specifications, and browser compatibility.... js addEventListener("waiting", (event)...firing. Using addEventListener() : js const video = document.querySelector("video");...

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...
  3. HTMLMediaElement: loadedmetadata event - Web AP...

    Learn about the loadedmetadata event, including its type and syntax, code examples, specifications, and browser compatibility.... js addEventListener("loadedmetadata"...firing. Using addEventListener() : js const video = document.querySelector("video");...

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...
  4. HTMLMediaElement: durationchange event - Web AP...

    Learn about the durationchange event, including its type and syntax, code examples, specifications, and browser compatibility.... js addEventListener("durationchange"...firing. Using addEventListener() : js const video = document.querySelector("video");...

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...
  5. ReadableStream - Web APIs | MDN

    Learn about the ReadableStream interface, including its constructor, properties, and methods, code examples, specifications, and browser compatibility....of syntax: js const stream = new ReadableS...the stream's values() method: js for await (const chunk of stream...

    developer.mozilla.org/en-US/docs/Web/API/Readab...
  6. Introduction to automated testing - Learn web d...

    This was quite a ride, but I'm sure you can start to see the benefits of using automation tools to do some of the heavy lifting in terms of testing....js , so you'll need to install it...way to install and update Node.js and npm is via a node version...

    developer.mozilla.org/en-US/docs/Learn/Tools_an...
  7. class - JavaScript | MDN

    The class declaration creates a binding of a new class to a given name.... Try it Syntax js class name { // class body }...binding is constant like const . js class Foo { static { Foo = 1;...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
  8. Setting up your own test automation environment...

    This module should have proven fun, and should have given you enough of an insight into writing and running automated tests for you to get going with writing your own automated tests....js, as it is quick and easy to get... webdriver.io and nightwatch.js are also good choices. To install...

    developer.mozilla.org/en-US/docs/Learn/Tools_an...
  9. SyntaxError: continue must be inside loop - Jav...

    The JavaScript exception "continue must be inside loop" occurs when a continue statement is not inside a loop statement.... js array.forEach((value) => { if...// do something with value }); js array.forEach((value) => { if...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
  10. HTMLMediaElement: canplay event - Web APIs | MDN

    Learn about the canplay event, including its type and syntax, code examples, specifications, and browser compatibility.... js addEventListener("canplay", (event)...firing. Using addEventListener() : js const video = document.querySelector("video");...

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...