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Course Introduction：Detect web page scrolling percentage using jQuery The following jQuery code snippet demonstrates how to trigger an event action when a user scrolls to a specific percentage of the webpage. Tests show that when capturing mouse scroll events, it is best to use values ??between 55% and 100%. $(document).ready(function(){ // Example: Show a div when scrolling to 75% of the web page var webpage = $("body"); var webpage_height = webpage.height(); var trigger_height = webpage_hei

2025-03-10 comment 0 931

Use jQuery to implement the 'Select All/No Select All' function of check boxes in multiple regions

Course Introduction：This article introduces in detail how to use jQuery to implement the "Select All/No Select All" function of multiple sets of check boxes in a web page. By defining specific HTML structures and class names for each independent checkbox group and writing corresponding jQuery event processing logic, you can efficiently manage the selected status of checkboxes in each group. The tutorial covers the "Select All" button to control all check boxes in the same group, as well as the core interactive logic of updating the "Select All" button when the status of a single checkbox changes, and provides complete code examples.

2025-07-25 comment 0 353

`SqlParameter Parameters.Add vs. AddWithValue: Which Method Should You Choose?`

Course Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0 696

Dave The Diver: How To Catch Spider Crabs

Course Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0 856

How to Count Conditional Column Values in SQL: A Priority-Based Example?

Course Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0 866

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Please give me some advice on how to monitor the mouse wheel event in js and then jump out of the currently running method.

Dear friends: I have a piece of js code that uses the animate method of jquery. I need to monitor the movement of the mouse wheel when this code is running. If there is movement of the mouse wheel, exit the animate method. Please tell me how to write the code. ? Attachment: window.onload = function () { setTimeout(autorollup,3000);

2021-10-28 09:20:05

Please give me some advice on how to modify margintop in JS, causing infinite slide.

That's what happened:. . . . I made a web page, and the lower half of the web page needs to wait 3 seconds to automatically move up after loading, so I used Jquery's animate method: $("#part2").animate({marginTop: "-=800px" }, 8000); Rango, after using this method, it turned out that the mouse wheel could not be removed. So, I used a piece of js code to monitor the wheel movement. If there is a wheel movement,

2021-10-28 09:20:51

laravel no response with ajax - Stack Overflow

{code...} {code...} {code...} The code is as above, nothing happens when clicking the submit button, and no records are inserted into the database. jQuery has also been introduced in the parent page header, page code, control The server and routing settings are as above. I really don’t know where the problem is. Can anyone please answer it?

2017-05-24 11:32:29

How to select all elements in Bootstrap pagination code using JavaScript?

I'm using Bootstrap for a website I'm preparing. Since the overflow scrollbar looks bad, I've hidden it with CSS and tried scrolling the pagination with mouse wheel via JavaScript. When I use the code given below, the top code works but the bottom code does not. When I give [0,1] as index value in JavaScript code, this time the bottom index value works but the top index value doesn't work. How can I make it work on two paginations on the same page? From what I understand from research, I may need to use let or va

2024-02-25 23:29:10

transform - How to keep the coordinate axes unchanged during multiple transformations of CSS3's 3D transformation, or is there a matrix algorithm that can achieve this?

I built a cube with CSS3 and wanted to use the mouse to control the rotation of the cube (X-axis and Y-axis). The core code for page rotation is probably like this: {code...} The problem that occurred was this, the first operation There is no problem, but there will be problems later. The reason is that the rotation operation seems to rotate the entire coordinate axis...

2017-06-10 09:48:42

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