Implementation of online chat room using JS? Or use PHP?

I want to implement the following real-time chat function. Since chat history does not need to be saved, does that mean PHP is no longer needed? Just use JS directly?

吕晨曦 2020-05-14 09:30:39 0  6  1362

javascript - Python or JS beautifies and compresses SQL statements

When building a SQL audit system, I want to compress the SQL statements entered by users (for storage in DB) and beautify (for interface display). I found two python-related libraries: {code...} Do you have any relevant libraries to recommend? JS related libraries are also available

为情所困 2017-05-18 10:48:12 0  1  722

javascript - Is there a way to implement HTTP long connection through JS on the client side

As mentioned in the title, I need to frequently request data from a specific server and keep establishing connection requests. This will cause a lot of overhead. I wonder if JS has a way to implement HTTP long connections, and subsequent data requests will continue to be repeated. Use this connectio...

高洛峰 2017-05-19 10:30:44 0  7  546

php implements real-time search

How to implement real-time search box under thinkphp3.2? ? If possible, could you please be more detailed? Thank you! !

黄舟 2017-05-31 10:34:36 0  4  817

Has anyone implemented a presentation feature in the Apache Calcite adapter?

I want to implement a showfoo command related to the database engine we wish to connect to Calcite via the Calcite adapter. Of course, foo is something specific to that database engine. I'm trying to figure out which relnode it should be mapped to (among other details). So if anyone has implemented ...

P粉885035114 2023-09-02 12:15:50 0  1  491

nginx caches js, css, images and other information. What is the implementation principle?

nginx caches js, css, images and other information. What is the implementation principle?

高洛峰 2017-05-16 17:23:04 0  1  1045

Cloud studio runs PHP, who knows how to use it? Please give me some advice. . . .

Cloud studio runs PHP, who knows how to use it? Please give me some advice. . . . Cloud studio runs PHP, who knows how to use it? Please give me some advice. . . . Cloud studio runs PHP, who knows how to use it? Please give me some advice. . . . Cloud studio runs PHP, who knows how to use it? Please...

木子曈 2019-03-22 11:59:22 0  0  868

php+workerman implements new order prompt voice

Dear masters, I would like to ask: There is an order process now. After the user places a dingdan order, the background reminds the administrator that there is a new dingdan reminder. 1. How to use Workerman to implement it? Or other methods? 2. How do you know if a dingdan is a new dingdan? 3. When...

A峰 2020-04-12 13:11:18 0  2  1901

javascript - js determines whether a certain dom element is contained in another dom element

js determines whether a DOM element is contained in another DOM element. No need for jquery, use js to implement

大家讲道理 2017-05-18 10:52:00 0  1  655

java - Why does HashMap both inherit AbstractMap and implement the Map interface?

We know that AbstractMap has already implemented the Map interface. Why does HashMap need to implement the Map interface one more time? Even if I remove the Map interface from the source code, no error will be reported. What is the reason for this?

巴扎黑 2017-05-17 09:59:01 0  1  704

Laravel implements daily event loop

Does anyone know how to implement a loop of daily events. In my case I have 10 events see it as event 1, event 2, event 3 and.... how can I do that let's say Monday event 1 Tuesday event 2 Wednesday event 3 Thursday event 4 weeks Five activities 5 Saturday activities 6 Sunday activities 7 Monday act...

P粉609866533 2024-03-28 16:15:14 0  2  499

js got the path of the word document on my server, how to display it on a new page

Through the interface, I got the path of the word document on my server through the js. Now I want to display the content of the worder document on my new page. How to achieve this?

懒货 2020-04-07 12:00:56 0  2  1016

Am I using Firebase JS SDK or React-Native-Firebase?

I created a large web app using Firebase's JSSDK and now I'm transitioning to a mobile app using React-Native and Expo. Since I use Expo, I created a development client so that I don't use ExpoGo since RNFirebase uses native code. My goal: implement basic Google login associated with React-Native-Fi...

P粉083785014 2023-09-02 18:27:28 0  1  633

laravel - How to implement this kind of business logic? Pets work offline and grow regularly, how to achieve it with php+mysql

How to implement this business logic? Pets work offline and grow regularly, how to achieve it with php+mysql

世界只因有你 2017-05-16 16:52:27 0  2  634

javascript - How to achieve the return to top effect on the mobile phone? (The scroll bar on the mobile phone will be hidden and cannot be detected) The anchor function of the sui framework a I use cannot be used. Is there a js method?

Like the title, because the sui framework is used, the anchor link effect of a has no effect. Although I disabled the routing function, it still doesn't work. Is there any js method to return to the top? Or is there a master who is familiar with the sui framework? How should I implement it?

ringa_lee 2017-05-16 13:31:29 0  1  1233

Learn how to implement pagination or filtering functionality in Next.js

I'm looking for a solution to implement paging or filtering in my web application using traditional page routing methods. Do I need to use client side data fetching? When the query string changes, it will not cause the page content to be re-rendered. I don't want to use SSG to get the entire data an...

P粉517814372 2023-08-14 20:23:46 0  1  696

javascript - addEventListen passes this into the second parameter to implement binding events

Recently, I was looking at the source code implementation of some libraries and discovered that this was passed into the second parameter of addEventListener. I felt confused, so I came up to ask questions. The following code is my simple simplified and tested {code...} Why can events be bound in th...

怪我咯 2017-05-18 11:03:11 0  2  949

javascript - In vue-cli, proxyTable is used to achieve cross-domain. There is no problem with get access, but there is a problem when passing data through post.

The vue-cli scaffolding was used in the project for development, in which proxyTable was used to achieve cross-domain implementation, and axios was used to send requests. But during the project process, there is no problem using the get method to request and the data can be obtained. However, there ...

習慣沉默 2017-07-05 10:45:20 0  3  1103

nginx configures gzip to compress css but not compress js

The nginx I use is 1.6. gzip is written in the configuration file. See {code...} but I used the online testing tool http://gtmetrix.com/ to test. Only the css was compressed and the js was not compressed (the same is true for the domestic webkaka speed test). How strange. I asked a lot of people, bu...

大家讲道理 2017-05-16 17:27:04 0  1  596

How does MySQL implement nesting of another table within a table?

1. I am a database novice... If I want to implement column A in table 1 of database and nest the column BCD in table 2, how should I do it? Use foreign keys? 2. If I use foreign keys, I always get an error when I create and save the foreign keys: {code...} What is going on with this problem? What to...

为情所困 2017-05-18 10:50:13 0  1  684