How to specify in HTML that an element must be filled in before submitting the form?

#The required attribute in HTML is used to specify that the element should be populated before the form is submitted. If the field is not filled in and the submit button is clicked, an error will be generated causing the form submission to fail. The error will be "Please fill in this field".

The required attribute can be used on input, select and textarea elements.

Example

You can try running the following code to achieveRead-onlyProperties -

    
  
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