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Required attribute: If you want to make an input mandatory to be entered by the user, you can use the required attribute. This attribute can be used with any input type such as email, URL, text, file, password, checkbox, radio, etc. This can help to make any input field mandatory.

Fields marked with * are mandatory Using an asterisk (*) symbol content authors notify mandatory field. This is said to be one of the accessible modes of identifying a mandatory field, however this method also will be a problem with screen readers in certain times.

Asterisk (*) next to a form control's label usually indicates it as "required".

How to indicate a required field Provide the required text in the label. Provide a graphic * image in the label with appropriate alt text. Providing star (asterisk) symbol. Use of color to identify if a form control is required. Providing HTML5 & ARIA required attributes.

Use asterisks to indicate required fields? Another common approach seen in forms is to mark the mandatory fields with an asterisk and not mark the optional fields. While an asterisk to the left of the label makes it easy to see, it assumes a user understands what this means.

Asterisk (*) next to a form control's label usually indicates it as "required". Oftentimes, this asterisk's purpose is then explained somewhere else on the page. Many users (especially screen reader users) may be confused with that, so be sure to make this information is easily accessible.

Mandatory fields are used when information is required in order to submit a form. If the mandatory field is left empty, the system will display this field in red and not allow the form to be published or submitted without that field completed.