javascript tag

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

1385 questions


1 answers
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Which is better to write the conditional branch, the caller or the caller?

Suppose you have two JavaScript codes:Except for fine performance, both should get the same output.The difference is that if the variable isMorning is true, call the function morningGreeting() or the ...

19 hours ago

1 answers
255 views
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I would like to know how to make the json data generated by C# available in javascript.

Regarding the presentation code, I would like to refer to the json string of let json in the source code below in the form of arr.name, but why is it displayed as undefined?I checked the reference sit...

1 days ago

1 answers
308 views
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Cannot delete cookies using javascript

I would like to create a bookmarklet that can delete all cookies on the site using javascript.While checking the browser console, alert(document.cookie); I was able to check which cookies exist using ...

1 weeks ago

1 answers
249 views
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Information About Local Communication with A-painter

I would like to draw with various elements because it can be expanded using VR paint software called A-painter, and since it is possible to develop locally, I am trying to draw on local communication....


1 answers
218 views
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Please let me know how to change the image.

I am currently learning front-end technology.Could someone tell me how to change the image of the code below?Thank you for your cooperation.console.clear();const canvas= document.getElementById(hero-l...

1 weeks ago

1 answers
232 views
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[vue.js] Error in API communication through store.dispatch in forEach statement

We are developing a function to call an external API through the vue.js language as described in the title.As I developed it, I have to implement the following behavior, but I am inquiring because I k...

2 weeks ago

1 answers
186 views
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I want a function that recognizes a specific location on the iPhone and automatically copies it.

I would like a code that recognizes and copies the location of a specific location on the iPhone (the location I identify every time is the same).I would like to use it by embedding it in the shortcut...


1 answers
184 views
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I want to read the json file in the extension with the extension

The whole thing you want to doExtensions detect notifications implemented on the website and block notifications when url in the block list is transition destination urlI would like to read the json f...


1 answers
202 views
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How to access a development server powered by VueCLI from a smartphone in your local network and handle media (such as a microphone)

I would like to handle the sound of microphones connected to smartphones and PCs within a web application configured with VueCLI.I would like to access the development server built on the development ...

2 weeks ago

1 answers
287 views
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I want to use extensions to read json files in extensions

The whole thing you want to doExtensions detect notifications implemented on the website and block notifications when url in the block list is transition destination urlI would like to read the json f...

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