Currently, I am in the process of converting React js to typescript. The component being used is a Class Component.
I would like to obtain CSS settings through props and apply them to an element.
How can I resolve this issue?
render(){return(
<span style={{
position: this.props.position ,
left: this.props.left,
top: this.props.top,
height: this.props.height,
width: this.props.width
}} /> </span>)}
If you want Typescript to recognize a string as one of the options for the position property (such as absolute or relative), there are a couple of ways to go about it.
<span style={{
position: this.props.position,
left: this.props.left,
top: this.props.top,
height: this.props.height,
width: this.props.width
}: as React.CSSProperties} /> </span>)}
Alternatively, you can specify the type for the position property where it is originally defined in the parent element, like this:
const styles: ('absolute' | 'relative' | 'fixed') = 'absolute';
It is not necessary to explicitly cast the object, just declare the type as React.CSSProperties during initialization.
function MyComponent(props) {
const styles: React.CSSProperties = {
position: this.props.position,
left: this.props.left,
top: this.props.top,
height: this.props.height,
width: this.props.width
};
return (
<span style={styles}></span>
);
}
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