style
attribute set to a JavaScript object. First, the names of certain CSS style properties use camel case. For example, the last challenge set the size of the font with fontSize
instead of font-size
. Hyphenated words like font-size
are invalid syntax for JavaScript object properties, so React uses camel case. As a rule, any hyphenated style properties are written using camel case in JSX.
All property value length units (like height
, width
, and fontSize
) are assumed to be in px
unless otherwise specified. If you want to use em
, for example, you wrap the value and the units in quotes, like {fontSize: "4em"}
. Other than the length values that default to px
, all other property values should be wrapped in quotes.
object
to a constant to keep your code organized. Uncomment the styles
constant and declare an object
with three style properties and their values. Give the div
a color of "purple"
, a font-size of 40
, and a border of "2px solid purple"
. Then set the style
attribute equal to the styles
constant.
styles
variable should be an object
with three properties.
testString: assert(Object.keys(styles).length === 3, 'The styles
variable should be an object
with three properties.');
- text: The styles
variable should have a color
property set to a value of purple
.
testString: assert(styles.color === 'purple', 'The styles
variable should have a color
property set to a value of purple
.');
- text: The styles
variable should have a fontSize
property set to a value of 40
.
testString: assert(styles.fontSize === 40, 'The styles
variable should have a fontSize
property set to a value of 40
.');
- text: The styles
variable should have a border
property set to a value of 2px solid purple
.
testString: assert(styles.border === "2px solid purple", 'The styles
variable should have a border
property set to a value of 2px solid purple
.');
- text: The component should render a div
element.
testString: assert((function() { const mockedComponent = Enzyme.shallow(React.createElement(Colorful)); return mockedComponent.type() === 'div'; })(), 'The component should render a div
element.');
- text: The div
element should have its styles defined by the styles
object.
testString: assert((function() { const mockedComponent = Enzyme.shallow(React.createElement(Colorful)); return (mockedComponent.props().style.color === "purple" && mockedComponent.props().style.fontSize === 40 && mockedComponent.props().style.border === "2px solid purple"); })(), 'The div
element should have its styles defined by the styles
object.');
```