java - convert radio button functionality into checkbox -


i have 2 radio buttons

<span class="text_content">td:</span> <input type="radio" name="lasttetanustype" value="td" <c:if test="${emergencycontactinfo.lasttetanustype == 'td' || emergencycontactinfo.lasttetanustype == null}">checked</c:if> >   <span class="text_content">tdap:</span>  <input type="radio" name="lasttetanustype" value="tdap" <c:if test="${emergencycontactinfo.lasttetanustype == 'tdap'}">checked</c:if> >

now want convert these radio buttons checkboxes functionality both can null 1 null 1 checked or both checked. if checked single checkbox value emergencycontactinfo.lasttetanustype=td,if select second 1 value of emergencycontactinfo.lasttetanustype=tdapand if select both value of emergencycontactinfo.lasttetanustype=td/tdap.

what trying buddy ? understood want change radio buttons checkboxes not radio buttons behave checkboxex allright change type checkbox

simpel demo::

<!doctype html> <html> <body>  <form action=""> <input type="checkbox" name="vehicle" value="bike">i have bike<br> <input type="checkbox" name="vehicle" value="car">i have car  </form>  </body> </html>

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