Will the variables remain unchanged after modification within the function? - Asynchronous code reference

Given the following example, why is outerScopeVar undefined in all cases? varouterScopeVar;varimg=document.cre...

From [JavaScriptdiscussion group] 2023-08-28 11:46:28 0  2  444

Perform Puppeteer actions in Laravel controller using JavaScript code

I'm using Puppeteer to launch a browser from a laravel controller, but I don't know how to run JavaScript code...

From [JavaScriptdiscussion group] 2023-08-28 09:40:29 0  1  544

Is console.log() asynchronous or synchronous?

I'm currently reading "AsyncJavascript" by Trevor Burnham. This is a great book so far. He talks abo...

From [JavaScriptdiscussion group] 2023-08-27 22:31:53 0  2  530

Preventing invalid characters from being entered in fields: A comprehensive guide

Onkeydown，我运行以下JavaScript：functionThisOnKeyDown(el){if(el.title=='textonly'){!(/^[A-Za-zÑñ-\s]*$/i).test(el.va...

From [JavaScriptdiscussion group] 2023-08-27 21:06:52 0  2  516

Google Firestore - How to get multiple documents by multiple IDs in one round trip?

I'm wondering if it's possible to get multiple documents by a list of IDs in one round trip (network call) to ...

From [JavaScriptdiscussion group] 2023-08-27 20:19:08 0  2  461

Check if value exists in firebase database

Is there a way in firebase to check if a value exists in the database? Firebase has method .exists() but accor...

From [JavaScriptdiscussion group] 2023-08-27 19:51:39 0  2  442

How to build/concatenate strings in JavaScript?

Does JavaScript support substitution/interpolation? Overview I'm working on a JavaScript project and as it get...

From [JavaScriptdiscussion group] 2023-08-27 19:01:23 0  2  508

Modifying a copy of a JavaScript object causes changes to the original object

I'm copying objA to objB constobjA={prop:1},constobjB=objA;objB.prop=2;console.log(objA.prop);//logs2insteadof...

From [JavaScriptdiscussion group] 2023-08-27 18:32:45 0  2  494

Merge/flatten an array of arrays

I have a JavaScript array, for example: [["$6"],["$12"],["$25"],["$25"...

From [JavaScriptdiscussion group] 2023-08-27 12:05:43 0  2  540

Line breaks in HTML are '\n'

Is there a way to make HTML handle \n newlines correctly? Or do I have to replace them? <divclass="tex...

From [JavaScriptdiscussion group] 2023-08-27 11:42:20 0  2  548

Why does redirecting to the homepage have no effect when using React react-router and useNavigate after logging in?

After successful login, I want the user to be redirected to the home page, I store the user login api request ...

From [JavaScriptdiscussion group] 2023-08-26 22:34:52 0  1  425

Unable to use Laravel Sanctum on frontend to generate CSRF cookie

Recently I tried using LaravelSanctum for authentication in Nuxt3 but ran into issues during the initial CSRF ...

From [JavaScriptdiscussion group] 2023-08-26 19:05:10 0  1  594

"SyntaxError: Unexpected token?" appears when displaying the "tsc" command.

I'm new to typescript and I'm trying to convert a typescript file to a javascript file by running the command ...

From [JavaScriptdiscussion group] 2023-08-25 19:05:09 0  1  990

How do higher-order functions like .map() work inside JavaScript?

Nowadays everyone is trying to use these higher order functions to get promising results by writing less code....

From [JavaScriptdiscussion group] 2023-08-25 17:41:30 0  2  444

Is it possible to use both /app and /pages folders in a Next 13 application?

The full details are that I'm working on a project that uses the /app folder as its main routing container, bu...

From [JavaScriptdiscussion group] 2023-08-25 13:00:30 0  1  708