Create a singleton pattern in front-end development using pure JavaScript

I have a project (pure frontend web app) where I serve HTML files from the backend using Node.js routing: router.get("/",(req,res)=>{res.sendFile(views_dir+"index.html" );});router.get("/login",(req,res)=>{res.sendFile(views_dir+&

P粉986860950 2023-08-03 12:09:44 0  1  554

Laravel search via pure (unsupported) enumeration

I'm trying to perform a search in the database via a pure enum field: enumEnum1{caseCase1;}Model::query()->where('enum1',Enum1::Case1)->first() and it doesn't work, causing Error ErrorObjectofclassEnum1Couldnotbeconversiontostring. When I search by supported enum it works: enumEnum2:int{ca

P粉773659687 2024-02-03 20:19:05 0  1  444

Does MySQL mixed utf8 utf8mb4 have any advantages over pure utf8mb4?

There are too many tables, only nicknames and comments are set to utf8mb4, config, tag, router, etc. do not use utf8mb4 at all. Will the mixture of utf8 and utf8mb4 still have an impact on search, indexing and log records? Is this way faster than pure utf8mb4? Is it stable? Does mysqld configuration...

巴扎黑 2017-06-22 11:54:49 0  1  1006

javascript - About the isPlainObject function in jQuery source code to determine whether the object is a pure object

{Code...} The following is the code mentioned in the appeal code {Code...} In jQuery 3.2.1, the function that determines whether an object is a pure object. The last two lines were not equivalent when I tested it myself. I would like to ask where the problem lies {code...} and why the output result ...

phpcn_u1582 2017-06-12 09:28:36 0  1  715

mysql cannot start

It was started and terminated. It kept repeating without any prompt. The content cannot be pure English, and the number of words is at least 100 words. The content cannot be pure English, and the number of words is at least 100 words. The content cannot be pure English, and the number of words is at...

蓝汉 2019-03-09 09:48:27 0  6  1172

javascript - The iframe tag is introduced into the html page. The content in the tag is the same as the original html content. Why is it displayed differently on the page?

This is a pure HTML static web page. I want to share a footer.

阿神 2017-07-05 10:40:31 0  4  793

Google Analytics Data API v1: Execute runReport and retrieve only JSON data

Currently I'm trying to get json data from GA4 using GoogleAnalyticsDataAPIv1. However, the response returned is not pure json data, instead if I just print it using PHP it gives me {}. However, using predefined methods we can get the value. Is there any way to get pure json data? <?phpputenv('GO...

P粉356361722 2023-12-13 17:37:47 0  1  408

javascript - How to make the outer div adaptively adjust its width according to the width of the inner div

It is best to use pure html+css, pseudo code example: {code...} Let the width of the outer div1 change with the width of the inner div

PHP中文网 2017-06-26 10:58:30 0  3  942

javascript - How is this stroke animation effect achieved?

This stroke-like effect will appear when the mouse is hovering over it. Can it be achieved with pure CSS? How to achieve the same effect?

学习ing 2017-06-24 09:44:08 0  3  917

javascript - Please recommend a rich text editor suitable for mobile use

Usage scenario: The email writing function in the web app can be a simple text, and then separate the function of uploading an attachment. But forwarding and replying to emails cannot be pure text, so you can only use a rich text editor. Vue1.0 single-page application for front-end technology, so is...

某草草 2017-05-19 10:14:36 0  3  551

python - version number comparison method optimization

Recently, I wrote a small method for the app version update function. It doesn’t feel very beautiful. How do you compare version numbers? Version number adaptation format: Pure numbers are separated by . {code...}

阿神 2017-05-27 17:39:41 0  1  727

Framework Learning - Android Interface Framework!

Is there any better interface framework to introduce? I want to use an Activity and several Fragments as the main framework. Is there any reference information, pure Android. No H5 or anything. Seeking introduction.

迷茫 2017-05-16 13:32:21 0  2  816

Problems with storyboard in iOS

There are two interfaces set up in the storyboard. When using {code...} in the code, how can I jump to the past without loading? Can't I use pure code to jump anymore? . Can I only use segue?

伊谢尔伦 2017-05-17 10:05:01 0  5  723

How to implement scrolling to a variable of a specified element in Vue 3?

I have the following function in pure JavaScript to scroll to an element, I want to convert this code to Vue3. varsource=''functionshowScrollInto(currentLocation,toLocation){source=currentLocation//The location returned after hiding the part document.getElementById(toLocation).style.display='block'd...

P粉060528326 2023-08-28 20:17:07 0  1  616

Tips to write this sentence in an elegant way

I have two tables Parameters and Share_Details. I have my raw SQL query here and I want to write it in pure Eloquent way. please help. $shareDetails=DB::select("SELECTs.id,share_type,para_int_1,para_int_2,price,para_nameFROMshare_detailsass,parameterswherep

P粉025632437 2023-09-07 18:25:04 0  1  649

javascript - How to implement circuit diagram using echarts? ?

I would like to ask, you masters, how can you achieve this effect? ​​Because the nodes on the line need to be dynamically rendered in the background and are not fixed. There is no need for Amap or Baidu maps or anything like that. It is a pure data visualization display.

曾经蜡笔没有小新 2017-06-10 09:48:57 0  1  607

TP framework, if you want to add a Google Authenticator login to the website backend, you need to ask an expert for advice.

It’s either a plug-in version or a pure TP framework backend. Please ask a master what steps are required to add Google verification to the backend, or pay a master to write one. Please, it’s best if you can write it remotely.

P粉845244887 2023-02-11 20:03:02 0  0  535

sort - javascript manually specify the order of an array of objects

I have an object array. I want it to be arranged in the order I specified. As follows, it is arranged in the order of the names I specified. I will use pure native JavaScript to do it in the following way. Is there any lodash or other third parties? The well-known suite can achieve the following eff...

淡淡烟草味 2017-06-28 09:27:54 0  2  685

Can I run Nuxt 3 without using <script setup>?

Is it possible to migrate a Nuxt2 application to Nuxt3 and keep the JavaScript that I execute in the pages between pure tags instead of updating them as tags? If not, what changes should I make to my code? Basically: what's the main difference between these two?

P粉541796322 2023-09-09 16:35:19 0  1  526

javascript - The browser will remember the password every time it logs in. Can it be made to log in or log out without remembering the password?

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欧阳克 2017-06-22 11:53:41 0  4  963