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

1427 questions


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If you foreach a modal, only the same data is detected.

Techniques usedjava, springboot, bootstrap, thymeleafWhat do you want to doI would like to send the application number and status after the modal confirmation operation.ProblemsAfter opening the modal...


1 answers
412 views
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JSON data dumped in Django views is not modeled as expected in template javascript.

I'm trying to write a graph using Django user data.I have configured views to send the model in JSON format as follows:views.py diary_list=serializers.serialize('json', Diary.objects.filter(author=cur...

1 years ago

1 answers
296 views
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I want to process the input to the text area in real time and reflect it to another text area.

Like Google Translation, I would like to immediately reflect what I type on the left to the right, but I would like you to give me an overview of what kind of technology (appropriate programming langu...

1 years ago

1 answers
258 views
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Error due to semicolon added to return statement of Arrow function expression

ar.map() did not display Array [2,3,4] if the inside of ( ) is an Arrow function expression and there is a semicolon in the return statement. Can you point out the cause or error of this problem? func...

1 years ago

1 answers
373 views
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I want to change the string between specific tags in JavaScript.

What should I do if I want to change the string in an H3 tag in JavaScript?<h3id=test><font color=red>I want to change this character.</font></h3>

1 years ago

1 answers
268 views
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JavaScript cannot record to storage.

Unable to log to storage.I don't understand the grammar of the sample code and I don't think I know how to describe the key and value, but I don't know what's wrong with the browser's inspectors becau...

1 years ago

2 answers
330 views
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Want to display a message on the console with a button click

I want to create a program that alternates on and off on the console every time I click a button, but it doesn't work when I press the button.When you load the page, Uncaught TypeError: btn.addEventLi...

1 years ago

1 answers
429 views
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A like function using asynchronous communication cannot be implemented.

What I want to do is implement a like function using asynchronous communication (on the video posting page)As an overview of the portfolio, we separate pages dedicated to posting videos from pages ded...


1 answers
252 views
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The check box value cannot be retained.

I want to leave the checked items checked even after repeated screen transitions, but only the check box doesn't work well.Please let me know if you understand.window.onload=function onLoad(){// Cours...

1 years ago

1 answers
245 views
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There is a page where the location of the relevant company is displayed on a map from the regional search, but two of the same companies are displayed on some pages.

There is a page where the location of the relevant company is displayed on a map from the regional search, but two of the same companies are displayed on some pages.Example) Search results xx·Company ...

1 years ago
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