Required response answer in Mechanical Turk

Question

I am designing my task in MTurk and have tried to create a field with the required answer. That is my code:

<crowd-input name="Comment" placeholder="Explain why" required></crowd-input>

The problem is that submitting the task without filling any text in the sandbox allowed me to do so. I want this text box to be required. Any suggestions?

Answer 1

I found solution:

<input type="text" placeholder="Explain why" required></input>