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CSS zu JavaScript-Stilobjekt-Konverter

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Führung

CSS to JavaScript Style Object Converter

CSS zu JavaScript-Stilobjekt-Konverter

The CSS to JavaScript Style Object Converter transforms CSS declarations into JavaScript style objects and back. Whether you’re working with React inline styles, React Native StyleSheets, or CSS-in-JS libraries like styled-components and Emotion, this tool handles the conversion instantly — no more manual camelCase rewriting.

Anwendung

Paste your CSS declarations into the input panel. Select your desired output format — React inline style, React Native StyleSheet, or styled-components template literal. The converter processes each property in real time: hyphenated names become camelCase, values are properly quoted or kept as numbers, and vendor prefixes are handled correctly. You can also convert in reverse by toggling to JS → CSS mode. Click the Copy button to grab the output.

Merkmale

  • Bidirektionale Konvertierung – Convert CSS to JS style objects or JS objects back to CSS with a single toggle
  • Mehrere Ausgabeformate – Support for React inline styles, React Native StyleSheet, and styled-components/Emotion template literals
  • Smart camelCase – Correctly converts hyphenated CSS properties (background-color → backgroundColor)
  • Vendor-Präfix-Handhabung – Properly transforms -webkit-, -moz-, -ms- prefixed properties (e.g., -webkit-transform → WebkitTransform)
  • Numeric Value Detection – Keeps pure numbers as numbers (margin: 0 stays 0, not “0”) while quoting string values
  • React Native Optimized – Strips px units and converts to numbers when targeting React Native
  • Echtzeitverarbeitung – Conversion happens instantly as you type
  • Ein-Klick-Kopie – Copy the converted output to your clipboard

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Häufig gestellte Fragen

  1. Why do CSS properties need to be camelCase in JavaScript?

    JavaScript object keys cannot contain hyphens unless quoted. Since CSS properties like background-color and font-size use hyphens, they must be converted to camelCase (backgroundColor, fontSize) to work as unquoted object keys. This is a requirement of the JavaScript language specification, not a framework convention.

  2. What is the difference between inline styles and CSS-in-JS?

    Inline styles are JavaScript objects passed directly to a component's style prop. They support only a subset of CSS (no pseudo-classes, media queries, or animations). CSS-in-JS libraries like styled-components and Emotion generate actual CSS at runtime or build time, supporting the full CSS specification including pseudo-classes, keyframes, and media queries while still being authored in JavaScript.

  3. How does React Native handle CSS units differently?

    React Native uses unitless numbers for dimensions — writing width: 100 means 100 density-independent pixels. It does not support CSS units like px, em, rem, or vh. Percentage values are supported for some properties using strings (e.g., width: '50%'). This is because React Native renders to native views, not a browser DOM, so web-specific units have no meaning.

  4. How are vendor prefixes handled in JavaScript style objects?

    In JavaScript style objects, vendor-prefixed CSS properties follow a specific capitalization pattern. The prefix loses its leading hyphen and gets capitalized: -webkit-transform becomes WebkitTransform, -moz-appearance becomes MozAppearance. React and other frameworks use this convention to apply the correct vendor-specific styles in the rendered output.

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