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The required attribute is a boolean attribute. When present, it specifies that an input field must be filled out before submitting the form. Note: The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, radio, and file.

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.

Example 1. A salesperson fills out order forms for a customer. The company ships orders directly to customers, so a shipping address is required. The salesperson sees the field in bold.

Using the "required" Attribute The browser will verify that the input field has been filled out before submitting the form, and if it hasn't, it will display an error message. Depending on the browser, the default error message may differ, but it typically states that the field is necessary.

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.

HTML | <input> required Attribute The HTML required Attribute is a Boolean attribute which is used to specify that the input element must be filled out before submitting the Form. This attribute works with other types of input like radio, checkbox, number, text, etc.

Best Practice Required fields should be indicated with either a symbol or text, not just color. When providing an indicator for a required field, it should be placed right before the form field. This allows a screen reader to read the indicator to a screen reader user right before the user activates the field.

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.

A distinctive sign ( symbol, mandatory mention, etc.) must be provided in the label of each mandatory field. If a symbol is used to declare mandatory fields, a statement placed at the beginning of the form must indicate that the symbol stands for a mandatory field.

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 a star (asterisk) symbol. Use of color to identify if a form control is required. Providing HTML5 and ARIA required attributes.