prevent user from submitting form

CAPRINI78

New Member
I have my website in which I have email pdf functionality Procedure is :
  • when user enters email and then he has to click on submit button
  • after clicking submit button , form will not submit and form will hide and
  • there is another hidden div contains thank you message which appears with Ok button.
  • When User Click on OK button then form will submit.
But Now the Problem is :When User enter email and if he press ENTER accidentally then form gets submitted without showing thank you message.I want to Disable ENTER when user Press Enter key.
 
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