javascript - How to find or create a questionnaire with the function of the prohibition on the same answer? -
i need help. need find questionnaire in answer question (for example, telephone number) may not same 2 users. example:
enter phone number:
first user enters phone number: 123456789 , completes survey.
the second user starts question , answers same phone number 123456789. receives error message or request enter different answer.
or there easy implementation of problem using php or javascript.
maybe possible implement surveymonkey api.
i glad of or advice.
google forms writes spreadsheet database, allows regular expression fields , attached scripts. set field mach required format, validate response script.
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