JavaScript (/ˈdʒɑːvəskrɪpt/), often abbreviated JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of websites use JavaScript on the client side for web page behavior, often incorporating third-party libraries. All major web browsers have a dedicated JavaScript engine to execute the code on users' devices.
JavaScript is a high-level, often just-in-time compiled language that conforms to the ECMAScript standard. It has dynamic typing, prototype-based object-orientation, and first-class functions. It is multi-paradigm, supporting event-driven, functional, and imperative programming styles. It has application programming interfaces (APIs) for working with text, dates, regular expressions, standard data structures, and the Document Object Model (DOM).
The ECMAScript standard does not include any input/output (I/O), such as networking, storage, or graphics facilities. In practice, the web browser or other runtime system provides JavaScript APIs for I/O.
JavaScript engines were originally used only in web browsers, but are now core components of some servers and a variety of applications. Two of the most popular runtime systems for this usage are Node.js and Deno.
Although Java and JavaScript are similar in name, syntax, and respective standard libraries, the two languages are distinct and differ greatly in design.
Reference: WIKIPEDIA
1427 questions
In the case of Android devices in Javascript, Google Maps is in the URL schema comgooglemaps.You are experiencing a non-bootable symptom.This is happening on the following Android devices.Aquos Zeta S...
Thank you very much for your help.In order to get the value of ① when opening another site を from one site から, obtain the value from url on the opened site にて, and send the value to another site に, th...
How can ejs display characters without using <%=%>?For example, I don't know how to write when:<a href=class=<%// Add active to class depending on conditionif(hoge){ active}%>>
I would like to see what was called in phpfile.php in .modal-body of #mymodal, but the following code does not work.The modal comes out, and if it's not ajax, it will appear, so you can't load the pag...
I am thinking of introducing a conversation function through asynchronous communication.Data can be displayed without page movement, but it cannot be displayed without page movement or reloading.If an...
I'm making an application for smartphones with html5.I'm using Canvas to create an image in the app, and I don't know how to save the image to the iOS camera roll.(Drawing is done) Implementation of d...
I have implemented the function of accessing the page from papeteer and registering by automatically entering the form, but I am worried about how to register the image for the file upload implemented...
At MQTT, I'm thinking about using JavaScript to subscribe to my browser.JavaScript sources include:The mqttws31.js file is already in the same directory as index2.html.Nothing happens on the browser, ...
I am thinking of introducing a conversation function through asynchronous communication.Data can be displayed without page movement, but it cannot be displayed without page movement or reloading.If an...
document. The variable role is unknown.http://cya.sakura.ne.jp/java/calc.htmI am studying javascript while looking at the site. document.myForm.myLine.value=myInput;I don't know what the line is doing...
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