Warning:react does not recognize the XXX prop on a DOM element

Source: Internet
Author: User

This is a warning that react does not recognize non-standard attribute on DOM elements, and react removes these nonstandard attribute in the final render result.

Typically {... this.props} and Cloneelement (element, This.props), the parent-level useless attribute is passed to the child's DOM element.

For example:

function MyDiv(props) {
  if (props.layout === ‘horizontal‘) {
    // BAD! Because you know for sure "layout" is not a prop that <div> understands.
    return <div {...props} style={getHorizontalStyle()} />
  } else {
    // BAD! Because you know for sure "layout" is not a prop that <div> understands.
    return <div {...props} style={getVerticalStyle()} />
  }
}

You can use the rest parameter to receive, delete, and other methods to resolve:

const { layout, ...rest } = props
//or
const divProps = Object.assign({}, props);
delete divProps.layout;

For specific reference: React Official document Unknown Prop Warning


Warning:react does not recognize the XXX prop on a DOM element

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