Tag Required Field Warranty For Free

Informally, a required field is an input field on a form that must have a non-blank value to be valid. Conventionally, many flow action forms mark a required field with an orange asterisk ( ). The image itself is only a label to notify users that the field is required; it does not affect input editing or processing.

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.

You can write a JavaScript form validation script to check whether the required field(s) in the HTML form is blank or not. The following function can be used to check whether the user has entered anything in a given field. Blank fields indicate two kinds of values. A zero-length string or a NULL value.

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.

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.

If possible, provide an asterisk (*) in the label with appropriate alt text as required. If an asterisk symbol is being used, be sure to also use HTML5 or ARIA required attributes on the form fields.