Html Prettier: Format and Lint Your Code

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Html Prettier is a valuable tool for developers. It's a popular opinionated code formatter that helps you write clean and consistent HTML, CSS, and JavaScript code.

With Html Prettier, you can format your code to conform to a specific style, making it easier to read and maintain. This is especially useful when working on large projects with multiple contributors.

Html Prettier also includes a linting feature that checks your code for errors and warnings, helping you catch mistakes early on.

For another approach, see: Prettier Html Attribute Single Quote

Linting and Formatting

If you use ESLint, install eslint-config-prettier to make ESLint and Prettier play nice with each other. It turns off all ESLint rules that are unnecessary or might conflict with Prettier.

Prettier and linters can coexist, and in fact, integrating them can be beneficial. For example, you can use stylelint-config-prettier for Stylelint.

Prettier's decision to organize HTML attributes with one attribute per line can make it easier to find, edit, add, and remove attributes, especially in a source control system like Git.

Attribute Organization

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Prettier organizes HTML attributes with one attribute per line, making it easy to find, edit, add, and remove attributes.

This is particularly noticeable when using a source control system like Git, where changes are easily spotted in the "diff" screen.

A long list of attributes can be daunting at first, but Prettier's formatting makes it simple to scan and find the information you need.

Prettier honors the original order of attributes, so you don't have to worry about them being rearranged.

Some formatters might alphabetize attributes, but Prettier's default behavior is to leave them as is.

This is a deliberate design choice that makes it easier to work with the code, especially when adding new attributes.

Adding a new attribute on its own line means it will display as a single change in source control, making it easy to spot and understand what changed.

This is a big advantage when working with complex codebases and many changes, where it can be overwhelming to track down individual changes.

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ESLint and Other Linters

Credit: youtube.com, Tutorial - Use Prettier and ESLint in Visual Studio Code | Lint and Format your Code

ESLint and other linters can be a bit tricky to work with Prettier, but there's a solution. Install eslint-config-prettier to make ESLint and Prettier play nice with each other.

ESLint has a config that turns off all ESLint rules that are unnecessary or might conflict with Prettier. This is a game-changer for developers who use both tools.

If you're using Stylelint, there's a similar config called stylelint-config-prettier that does the same thing. It's a simple way to integrate Prettier with your linter.

Escape Quotes Correctly

In Prettier 1.15, string with escaped quotes in doubleQuote are now correctly escaped.

This means that previously, such strings would cause invalid output, but thanks to the update, they're now formatted correctly.

The issue was identified in the PR #5236 by @ikatyang, and it's great to see that it's been resolved.

Correctly escaping quotes is an important aspect of coding, as it prevents errors and ensures that code is readable and maintainable.

JSX and Template Formatting

Credit: youtube.com, How to Stop Prettier from Formatting Each HTML Tag on Its Own Line in React JSX Files

Prettier 1.15 introduces an option to print single quotes in JSX, which was a highly requested feature from the community.

You can enable this option using the --jsx-single-quote flag or by setting jsxSingleQuote in the config/API.

Prettier 1.14 had a bug that caused unfortunate line breaks in JSX, but it's now fixed in version 1.14.

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Option to Use Single Quotes in JSX

The Option to Use Single Quotes in JSX is a game-changer for many developers.

Prettier 1.15 introduced an option for printing single quotes in JSX, a feature that was highly requested by the community.

This feature is enabled by using the --jsx-single-quote flag or setting jsxSingleQuote to true in the config/API.

The huge demand from the community speaks to the importance of this feature, and it's great to see it finally implemented.

Developers can now use single quotes in JSX with ease, making their code more readable and consistent.

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Do Not Break JSX Logic Chain #5092

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In Prettier 1.14, there was a problem with line breaks in JSX that's now fixed.

Prettier 1.14 accidentally introduced some very unfortunate line breaks in JSX, but those cases have now been fixed.

Unnecessary indentations for logical expression chains in JSX are now prevented, thanks to the fix in #5092 by @duailibe.

This means that your JSX code will no longer be broken up with unnecessary indentations, making it easier to read and maintain.

In Prettier 1.15, string with escaped quotes in doubleQuote is now correctly escaped.

Expand your knowledge: Fixed Html

TypeScript

TypeScript is a statically typed language that compiles to JavaScript, allowing developers to catch errors early and improve code maintainability.

TypeScript was created by Microsoft in 2012, and it has since become a popular choice for large-scale JavaScript applications.

TypeScript's type system is based on interfaces, which can be used to define the shape of an object, including the properties it has and the types of those properties.

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Credit: youtube.com, CoderDojo Linz presents: Introduction to JSX in TypeScript with template-jsx

This allows for better code completion and auto-suggestion in editors, as well as more accurate error messages when something doesn't type-check.

TypeScript also supports generics, which enable more flexible and reusable code by allowing you to write functions and classes that work with any type.

In the context of JSX and template formatting, TypeScript's type system can be used to ensure that your templates are type-safe, which means you can catch type-related errors at compile-time rather than runtime.

A fresh viewpoint: Html Type Typescript

Comments and Trailing Spaces

Comments in try-finally statements are now printed correctly by Prettier.

This was a problem in previous versions, where comments were printed in the wrong order.

Prettier now preserves dangling comments in new expressions, rather than pulling them out of the parentheses.

This is a result of issue #5017 by @flxwu.

Trailing spaces for front matters' delimiters are now allowed by Prettier.

This is a change from the previous behavior, where trailing spaces were not detected, leading to issues with thematic breaks.

Preserve Dangling Comments in Expressions

Close-up view of HTML and CSS code displayed on a computer screen, ideal for programming and technology themes.
Credit: pexels.com, Close-up view of HTML and CSS code displayed on a computer screen, ideal for programming and technology themes.

In Prettier 1.15, passing a comment instead of an expression to a new call is now preserved instead of being pulled out of the parens.

This fix addresses an issue where comments were being incorrectly removed from certain expressions.

Correctly Print Lists in Front of Whitespace-Only Trailing Newlines

In Prettier 1.14, lists in front of whitespace-only trailing newlines were wrongly recognized as loose lists. This caused an issue where the user would need to format their code twice to get it stable.

Prettier 1.15 has fixed this issue, ensuring that lists are correctly printed in front of whitespace-only trailing newlines.

This fix is particularly important for users who work with code that has trailing whitespace, which can be easily overlooked but has significant implications for code formatting.

The fix is also a testament to the ongoing effort to improve Prettier's accuracy and efficiency, making it a more reliable tool for developers.

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Special Cases and Edge Cases

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HTML Prettier can handle complex cases with ease, such as parsing HTML templates with embedded JavaScript code.

In some cases, HTML Prettier may not work as expected due to the presence of certain directives, like the `

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Closing Angle Bracket

Prettier intentionally places the closing angle bracket on its own line, vertically lining it up with the tag’s opening angle bracket.

This visually appears as a semantic block, similar to how curly-brace languages line up their braces.

I find it to be both elegant and clever, as it provides a clear visual representation of the code structure.

On a similar theme: B Tag Html

Do Not Add Whitespaces Between Latin and Hangul

In Prettier 1.15, a change was made to not add whitespaces between Latin and Hangul characters, as Korean users prefer conventional spaces.

This change was made after receiving feedback from users, who reported issues with inserting whitespaces between Latin and Hangul.

In contrast, Prettier still inserts whitespace between Latin and CJK characters, like Chinese or Japanese, to improve readability.

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Advanced Options and Features

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Credit: pexels.com, HTML and CSS code on a computer monitor, highlighting web development and programming.

Html Prettier offers a range of advanced options and features to customize its behavior and improve your coding experience.

With Html Prettier, you can configure the parser to ignore certain syntax, such as HTML comments, to reduce noise in your code.

The parser also includes options to handle complex cases like unquoted attribute values and non-standard tags.

Format BeforeEach Like Regular Function Calls #5011

In Prettier 1.15, a fix was made to correctly format arguments in beforeEach calls.

Previously, arguments in beforeEach were wrongly hugged, but this issue has now been resolved.

The issue was reported by @ericsakmar and fixed with the addition of the #5011 feature.

Beautify Options

Prettier 1.15 introduced an option to print single quotes in JSX, which was a highly demanded feature by the community.

You can enable this option by using the --jsx-single-quote flag or by setting jsxSingleQuote in the config/API.

Prettier 1.15 also includes a range of beautify options that can help you format your code and files.

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Credit: pexels.com, Colorful HTML code displayed on a computer screen for programming projects.

These options include:

  • CSS Beautifier
  • CSS Minifier
  • HTML Beautifier
  • HTML Minifier
  • Javascript Beautifier
  • Javascript Minifier
  • Javascript Obfuscator
  • JSON Beautifier
  • JSON Minifier
  • OPML Beautifier
  • OPML Minifier
  • PHP Beautifier
  • XML Beautifier
  • XML Minifier

The beautify options are not limited to code formatting, as Prettier also offers tools for generating files and converting data formats.

Some of the additional tools include an HTML Form Builder, a Base64 To Image Converter, and a QR Code Generator.

Curious to learn more? Check out: Html Tools R

Claire Beier

Senior Writer

Claire Beier is a seasoned writer with a passion for creating informative and engaging content. With a keen eye for detail and a talent for simplifying complex concepts, Claire has established herself as a go-to expert in the field of web development. Her articles on HTML elements have been widely praised for their clarity and accessibility.

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