Simple JavaScript Checkbox Validation

http://stackoverflow.com/questions/11234622/simple-javascript-checkbox-validation

by Rich Costello December 27, 2019

HTML

<form method="POST" action="http://www.cs.tut.fi/cgi-bin/run/~jkorpela/echo.cgi">
 <input type="checkbox" name="checkbox" value="check"  />
 <input type="submit" name="email_submit" value="submit" onclick="if(!this.form.checkbox.checked){alert('You must agree to the terms first.');return false}"  />
</form>

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Simple JavaScript Checkbox Validation

http://stackoverflow.com/questions/11234622/simple-javascript-checkbox-validation

HTML

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Use pre-released features

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