Operate Required Field Text For Free

To make a select mandatory with HTML, use the required attribute. With the required attribute, the user must select a value before submitting the form; if the user refuses to select a value, then the form won't submit.

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.

The :required selector selects form elements which are required. Form elements with a required attribute are defined as required. Note: The :required selector only applies to the form elements: input, select and textarea. Tip: Use the :optional selector to select form elements which are optional.

Require or Unrequire Fields through Element Properties Select the element in the Form Builder. Click the Settings (gear) icon. Under the General tab, toggle Required to ?On? to make the field mandatory.

# Set the "required" Attribute using JavaScript Select the element. Use the setAttribute() method to set the required attribute. The setAttribute method will add the required attribute to the element.

Required Attribute Validation doesn't Work with Unclosed Input Tags. If the field misses the closing tag at the end then most probably the validation won't work. So always close the tags in either way.

It is a common technique to add an asterisk * to a form control's label. Then, somewhere else on the page, for example below the form, this asterisk is explained to indicate a required input (in allusion to foot notes in text documents).