Found a total of 10000 related content
Creating Charting Directives Using AngularJS and D3.js
Article Introduction：Core points
D3.js is a JavaScript library that can be used in conjunction with AngularJS to create interactive real-time charts with SVG (scalable vector graphics). This combination allows developers to create rich web applications with dynamic data visualization.
AngularJS and D3.js can be set in HTML pages to create chart directives. This includes creating AngularJS controllers and instructions and using the controller to save the data to be drawn in the chart. Then, you can use this directive to draw a line chart using D3.js.
The chart can be updated in real time to reflect changes in the underlying data. This can be done by using a collection observer in the instruction to monitor changes in the collection data and then detect
2025-02-21
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590
Creating a Visualization App Using the Google Charts API and AngularJS
Article Introduction：Core points
AngularJS, Google's popular JavaScript framework, can be used to build dynamic visual applications that leverage the Google Charts API. Angular's two-way binding feature allows charts to change dynamically based on data and user input.
Creating a visual application with AngularJS involves several steps, such as setting up Angular, building an application, and creating a chart. This process requires writing code in HTML and JavaScript, using Angular's MVC design pattern, and integrating the Google Charts API for visualization.
The Google Charts API provides various graphs
2025-02-22
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921
Web Scraping in Node.js
Article Introduction：Core points
Node.js' web crawling involves downloading source code from a remote server and extracting data from it. It can be implemented using modules such as cheerio and request.
The cheerio module implements a subset of jQuery that can build DOM from HTML strings and parse, but it can be difficult to deal with poorly structured HTML.
Combining request and cheerio allows you to build a complete web crawler to extract specific elements of a web page, but handling dynamic content, avoiding bans, and handling websites that require login or use CAPTCHA can be more complex and may require additional tools or strategies.
Web page
2025-02-24
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705
What is the HTML DOM (Document Object Model)
Article Introduction：DOM is a structured object model that the browser parses HTML files into. Through a tree structure, JavaScript can dynamically manipulate page content, structure and style. It corresponds to HTML tags in the form of nodes, such as element nodes and text nodes. JavaScript implements interactive operations through the API provided by DOM, such as: 1. Get elements (such as document.getElementById); 2. Modify content (such as textContent); 3. Add or delete nodes (such as createElement and appendChild); 4. Listen to events (such as clicks and inputs). The dynamic nature of DOM enables web pages to respond to user behavior in real time, and is the core of front-end development.
2025-07-07
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747
Understanding the HTML5 doctype declaration
Article Introduction：HTML5 declarations must appear at the beginning of the web page, and are used to inform the browser to parse the page with the HTML5 standard to avoid entering weird mode. 1. It is not an HTML tag but a declaration. It must be located on the first line of the file and there cannot be any content in front of it. 2. It is case-insensitive, and there is no need to close the tag or add attributes; 3. When generating in dynamic language, you must ensure that there is no unnecessary interference in the output; 4. You can confirm whether it is effective by checking the source code, developer tools or online verification tools. Proper use ensures that the page renders consistently across different browsers.
2025-07-05
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885
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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776
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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1404
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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1022
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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