How can I use javascript to record how long the user stays on the page?

I want to write a js that counts how long users stay on the page. There are currently two methods, but neither of them is ideal. Timer, use ajax to send data to the database at certain intervals. This method cannot guarantee accuracy and will affect efficiency. Use the onunload event to send data wh...

给我你的怀抱 2017-05-19 10:40:39 0  1  540

Prompts the user that there is a server that cannot be submitted

('The username you entered does not exist');location='login.html'</script>"; exit; };

炳强 2019-04-19 22:43:13 0  0  908

After the public account user information is called and stored in the database, can the image link before the user changes the information still be used?

After the initially authorized user avatar link is stored in the database, when the user changes the avatar, will the WeChat server change the new image link?

瘦马。 2017-11-02 19:13:22 0  1  1131

用redis开发留言板，用户名和密码或者留言列表应该用单独的key来存储吗？

我现在用redis开发留言板，用户账号密码用的是单独的key记录，列表是用 用户的用户名_guest_list这样的key来存储的。不知道对不对，请大神指教。这里贴上代码

習慣沉默 2017-04-27 09:03:20 0  2  850

javascript - How does Ionic ask the user for confirmation before returning to the previous page? If the user selects "No", the return operation is canceled and the user remains on the current page?

How does Ionic ask the user before returning to the previous page: The current data has been modified. Do you want to confirm to abandon the modification and return? If the user selects "No", cancel the return operation and remain on the current page? It seems that writing the code to pop ...

某草草 2017-05-31 10:38:31 0  1  716

java - spring boot framework uses restful to verify whether the username exists

When using restful style to verify whether the user name exists, all normal names can be verified, but when verifying whether the email address exists, no parameters can be accepted. The code is as follows {code...} The following is a picture of the test

女神的闺蜜爱上我 2017-06-28 09:25:42 0  2  1209

php - WeChat public account stores user information and how to guide unfollowed users to follow

I have never developed a WeChat public platform before. Recently, a project had the following doubts: 1. The demand is like this. After the user follows the public account, the openid is obtained and stored in the session. The front-end and back-end are separated, and the menu of the official accoun...

怪我咯 2017-05-24 11:33:55 0  3  815

How to save user session information when user closes website

I'm trying to build user replay session functionality for a website and I'm using the rrweb library to do this. What this library does is when recording: it captures all the events in the web page and I can save these events by storing them in an array and when I want to replay the session I just pa...

P粉725827686 2024-03-21 21:13:51 0  1  518

How can a user add save to cart without logging in?

Encountering this situation: Some users find it troublesome and require to add the purchased goods to the shopping cart without logging in. When logging in, add the items added when not logged in to the shopping cart. middle. The method I currently know is to save the product ID to the user through ...

PHP中文网 2017-05-17 10:05:11 0  5  1053

javascript - Issues about user login and information storage

Recently I am working on a WeChat project with multiple pages. I have some questions about user login: 1. Is the user permanent login (30 days) a front-end implementation or a back-end implementation? The front end can store the account number and encrypted password in a cookie to achieve this requi...

phpcn_u1582 2017-05-17 10:01:14 0  1  619

node.js - mongoose obtains user information through UserId and cannot save it to the object

{Code...} {Code...} Why doesn't assigning a value directly like this take effect? How should we save the queried user nickname into the data object?

伊谢尔伦 2017-06-05 11:08:53 0  2  1136

The registration page keeps prompting "The user name you entered already exists, please register again!"

The registration page keeps prompting "The user name you entered already exists, please register again!"

いLeo 2018-09-17 15:16:50 0  2  2508

How to extract Google OAuth user data and store it in Firebase Firestore using getRedirectResult method?

I'm using Firebase Authentication to authenticate users on a website with two methods: email/password and GoogleOAuth login. Whenever a user signs up via the email/password method, I use the following code to save the information they entered in the CloudFirestore document: createUserWithEmailAndPas...

P粉215292716 2024-04-02 15:32:42 0  1  560

In a multi-user environment, how does tp5 verify whether the data has been modified by others before it is submitted and saved? Is there any built-in verification method?

In a multi-user environment, multiple users view and modify the same piece of data. How to verify that the data has not been modified by other users before the user submits and saves it? I want to add a timestamp field to the database table design to save the data modification time. time, and then p...

phpcn_u16587 2018-01-05 02:05:53 0  1  1132

How can I create a file in memory for the user to download instead of going through the server?

Is there a way to create a text file on the client side and prompt the user to download it without any interaction with the server? I know I can't write directly to their computer (security, etc.), but can I create the file and prompt them to save it?

P粉231112437 2023-08-23 17:55:41 0  2  578

Store user input in an array database

I'm trying to create an advertising website where the user creates a profile with all the details and pictures from their profile, but to do this I need to store it in an array in the backend database so that I can retrieve them later. This is what the backend javascript looks like. exportconstusePr...

P粉994092873 2024-03-29 21:37:18 0  1  468

req.session.user - Property 'User'; does not exist on type 'Session'; error while trying to pass session data using express session

I'm trying to make a simple login form for users to log into a website and then save their session data to a session cookie. I'm using express-session and in their documentation it gives this as an example to set up: app.post('/login',express.urlencoded({extended:false}),function(req,res){/ /loginlo...

P粉593536104 2024-02-04 09:05:25 0  1  475

How to save notifications for multiple users in phpmysql database without overloading the database with records

I'm concerned that I could easily create a crawl in the database while trying to ensure that all users in the database can view the same messages. The problem is that I need to be able to send a message from my admin area and have all users receive notifications and also have the option to mark the ...

P粉068174996 2024-03-30 22:51:20 0  1  575

tp3.2 implements adding to shopping cart without login

How to add items to the shopping cart when not logged in and retain the items in the shopping cart after logging in. How to determine whether the user who added the shopping cart before logging in and the user who retained the shopping cart after logging in are the same user?

TAO 2018-06-21 13:28:23 0  5  1794

Avoid errors when editing data without uploading user images

So when I'm updating the data for the user, I'm getting an error where it wants to upload the image again even though I've already uploaded the image for the user in the database. Can anyone tell me how to save the user without uploading the image, but keep the uploaded image in my database? The err...

P粉707235568 2024-03-31 12:44:01 0  1  426