CSS Attribute Name in JavaScript

By Xah Lee. Date: . Last updated: .

CSS attribute names are dash separated, e.g. font-size.

The corresponding property in JavaScript is camelCase: fontSize.

Here's a table of setting styles in CSS and in JavaScript:

CSS Syntax vs JavaScript DOM Syntax
CSSJavaScript
padding:1emele.style.padding="1em"
border:solid thin redele.style.border="solid thin red"
background-color:redele.style.backgroundColor="red"
font-size:largeele.style.fontSize="large"
font-family:"DejaVu Sans",sans-serifele.style.fontFamily='"DejaVu Sans",sans-serif'
Google Chrome browser console completion
Google Chrome browser console JavaScript keyword completion

A easy way to check style attribute is to use browser's JavaScript console completion feature. Type document.body.style. then press Tab, it'll show a list. [see JS: How to Use Browser Console]

DOM How-To

  1. DOM: Basic DOM Methods
  2. Get Elements by ID, Tag, Name, Class, CSS Selector
  3. Change CSS
  4. Change Node Content
  5. Create/Insert Node
  6. Remove Node
  7. Get Element's Attribute Value
  8. Set Element's Attribute Value
  9. Remove Element's Attribute Value
  10. List/Add/Remove Class Attribute
  11. Add/Remove Event Handler
  12. DOM: Navigate DOM Tree
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