How Can SnappySnippet Help You Extract HTML CSS JS Code from Website Elements?

Solving the Challenge of Selectively Copying HTML CSS JS from DOM Elements

Developers often face the need to examine and utilize specific sections of website code for personal projects. Copying individual elements and associated styles can be time-consuming. To address this challenge, we sought a tool that enables the extraction of HTML CSS JS for any desired element.

The Answer: SnappySnippet

The answer lies in SnappySnippet, a tool developed and made available on GitHub. It empowers users to extract HTML, CSS, and JS from the most recently inspected DOM node. Additionally, it offers the option to send this extracted code directly to CodePen or JSFiddle.

Key Features

SnappySnippet boasts a range of features, including:

• HTML cleanup and attribute removal
• CSS optimization for readability
• Full configurability with optional filters
• Support for ::before and ::after pseudo-elements
• User-friendly interface

Implementation Challenges and Solutions

The SnappySnippet implementation required overcoming several obstacles:

1. getMatchedCSSRules() Limitations:
Initially, the focus was on retrieving original CSS rules from CSS files, but the approach proved ineffective due to issues with CSS selector matching in the context of the isolated HTML snippet.

2. getComputedStyle() Considerations:
The next attempt involved using getComputedStyle(), but required separating CSS from HTML.

2.1 Separating CSS and HTML:
IDs were assigned to nodes, enabling the creation of appropriate CSS rules, thereby addressing the separation issue.

2.2 Removing Default Properties:
getComputedStyle() returns all possible properties, including browser defaults. The solution involved comparing element styles in the website context with those in an empty iframe without CSS stylesheets, allowing for the identification and removal of default properties.

2.3 Removing Prefixed Properties:
Prefixed properties such as -webkit- were identified and removed because they are often unnecessary and may indicate proprietary features.

2.4 Combining Same CSS Rules:
Identical CSS rules were combined to reduce code size and improve readability.

2.5 HTML Cleanup and Formatting:
The outerHTML property returns code in its original format, requiring reformatting using a JavaScript library (jquery-clean).

2.6 Optional Filters:
To ensure flexibility, all filters are user-configurable through the Settings menu, allowing for customization based on individual requirements.

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