Found a total of 10000 related content
Getting Started with Redux
Article Introduction：This article introduces Redux, a JavaScript framework for managing application state, using a simplified shopping cart example. It emphasizes the importance of immutability in JavaScript and demonstrates how to avoid unexpected bugs when working wit
2025-02-16
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471
javascript - Please help with the problem of implementing shopping cart array! ! ! ! ! !
Article Introduction：Each product has an id, title, and price. Every time I click to buy, I add it to the array. But I want to judge based on the ID. When adding a product to the shopping cart repeatedly, add the same product to a two-dimensional array. How to write it? {Code...} Thank you everyone, it is true that my idea is very spicy...
2016-07-06
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1076
My shopping cart project for a Farm Shop
Article Introduction：I've just finished creating a front end shopping cart web app using HTML, CSS & vanilla JavaScript. Because I love buying veg at my local grocers', I based it on a the idea of a farm shop called Finley's Farm Shop.
To click around on the projec
2024-12-18
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757
When should an alt attribute be left empty?
Article Introduction：When the picture does not need to be described, there are three main situations: First, the picture is only decorative elements, such as background patterns or icons with no practical significance, and it will not affect information transmission after deletion; Second, the picture content has been clearly described in adjacent text to avoid repeated interference with screen reader users; Third, the picture is used as part of a button or link, and there are texts next to it to illustrate its function, such as a magnifying glass icon or shopping cart icon next to the search box. The rational use of the alt attribute can improve the accessibility and SEO effect of web pages. The key is to judge whether the picture has substantial significance.
2025-06-29
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628
What is tree-shaking, and how do build tools like Vite or Vue CLI leverage it for Vue applications?
Article Introduction：Tree-shaking is a technology that optimizes JavaScript applications by removing unused code. 1. It relies on the static structure of the ES6 module, analyzes and excludes unreferenced functions, variables or components during construction; 2. Vite uses Rollup for production construction, automatically performs tree-shaking, while VueCLI implements similar functions based on webpack; 3. To maximize the effect, ES modules should be used, avoids side effects, splits large files, only introduces required modules, and uses third-party libraries with caution. This technology significantly reduces package size and improves application performance.
2025-06-06
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369
What are Service Workers and what problem do they solve?
Article Introduction：ServiceWorker is a JavaScript script running in a browser's independent thread. It acts as a proxy layer between the web page and the network, and can intercept and process network requests. It solves the problem of access failure and repeated requests wasted bandwidth due to network instability in traditional web pages. Through the cache policy, offline access is achieved, secondary loading speed is accelerated, and functions such as push notifications and background synchronization are supported. When using it, you must first register ServiceWorker, then write a script to listen for installation and request events, cache resources, and respond to requests from cache first. Common scenarios include mobile optimization, news pre-cache, and e-commerce shopping cart experience improvement.
2025-06-28
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623
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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1023
Terraria: How To Make A Loom
Article Introduction：There are a lot of crafting stations that you can make in Terraria. This ranges from simple anvils to unique stations meant for one specific type of resource. Early into the game, you'll be able to make your own Loom, which is primarily used to make
2025-01-10
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1295
