Found a total of 10000 related content
Scroll to Top Using jQuery (Setup time: 2mins)
Article Introduction：Quickly create a website back to top scrolling function (set time: 2 minutes)
This guide will guide you step by step how to set up the Back to Top feature on your website. Just scroll down this page to view the demo.
Download the scrollTo plugin and include it.
Get an image (arrow or similar).
Contains the following HTML code.
Contains the following jQuery/JavaScript code to capture window scrolling and process the display of images.
It's that simple!
HTML
jQuery
This jQuery code displays the image when the user scrolls down, hides the image when scrolling up, and processes click events.
$(document).ready(funct
2025-02-24
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884
10 Dummy Image Generators for Web Designers
Article Introduction：Ten free virtual image generators to help you quickly create web page prototypes
Rather than creating placeholder images manually, save time with free automation services. Here are ten tools that generate virtual images immediately, especially for web designers who prefer to quickly create different layouts or responsive image layout prototypes.
Update: June 20, 2013: Added pixelholdr and topped it.
pixelholdr
I put pixelholdr at the top of the list because it will search for Flickr using your keywords and grab a placeholder image for you. great!
Source Code Demo
fakeimage
A similar to dummyimage.c
2025-02-26
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695
Implementation method of multi-level linkage pull-down box between Vue and Element-UI
Article Introduction：How to use Element-UI in Vue to implement multi-stage linkage drop-down boxes? Use multiple El-Select components to bind data through v-model and use logic to control dynamic changes in options. Use a recursive function to efficiently generate and update the option list, dynamically update the options for subsequent drop-down boxes based on the selection results. Pay attention to the design of the data structure. A clear data structure can simplify the code logic. Considering performance issues when the data volume is large, use tree structure or virtual scrolling technology to optimize rendering. Handle errors to avoid program crashes. Pay attention to the readability and maintainability of the code, use meaningful variable names, add comments, and split the code into small, reusable functions.
2025-04-07
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443
Techniques for Improving JavaScript Application Performance
Article Introduction：The key to JavaScript application performance optimization is to reduce DOM operations, rational use of anti-shake throttling, lazy resource loading, cache and multiplexing calculation results. 1. Reduce unnecessary DOM operations, merge updates, use document fragments or strings to splice HTML content to reduce re-arrangement and redrawing; 2. Use anti-shake (such as search box input) and throttling (such as scrolling monitoring) to control execution frequency; 3. Lazy loading resources, control script loading, IntersectionObserver to achieve lazy image loading, routing-level code segmentation to reduce the loading pressure on the first screen; 4. Use cache to avoid repeated calculations, including variable multiplexing, API request local cache, and function return value memoi
2025-07-07
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211
Improve Browser Performance With the CSS Stress Test Tool
Article Introduction：CSS3 special effects improve development efficiency, but also affect performance. This article introduces a bookmarking tool called CSS Stress Test, which can help developers identify CSS code that causes website performance problems.
The background, rounded corners, shadows, transparency and transformation of CSS3 greatly simplifies the web development process and avoids the use of image slicing, extra elements or scripts. However, these features can also have a significant impact on browser performance. A few years ago, when I first tried these technologies, I was stunned by the impact on browser performance. A simple CSS property can lead to obvious redrawing and page scrolling stuttering. In one project, I had to give up rounded corners and use pictures to solve performance problems.
Fortunately, beauty
2025-03-03
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291
Web App Image Preloading Setup in 2mins
Article Introduction：A resource preloading method to speed up web applications. Trust me, this method works and it can be achieved in just 2 minutes. Modern browsers cache the plugin after it loads the resource, so it is actually only used when it is initially loaded (see screenshot below). There will be no longer any problem with slow image loading in web applications! The plugin can also be used to preload other content such as scripts, audio, video, etc... You can also set callback functions for a single project. This will be the content of another article, so stay tuned!
Setup steps
Includes preload.js plugin
Create your image loading list
(Optional): Show loading progress bar
(Optional): Perform certain operations in the load completion callback
Example code containing progress bars
man
2025-02-23
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655
Dave The Diver: How To Catch Spider Crabs
Article 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
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777
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1405
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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