Helper text conveys additional guidance about the input field, such as how it will be used. It should only take up a single line, being persistently visible or visible only on focus.
In your application install:
npm install "@material/textfield"In your Sass file import:
@import "@material/textfield/helper-text/mdc-text-field-helper-text";Makes the helper text permanently visible.
Indicates the helper text is a validation message.
Renders a helper text paragraph node. Place this right below your
TextField.