javascript - carry some extra information in an HTML select/option dropdown list -

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i want carry hidden information (eg: postal code) in html select/option dropdown list , make available javascript function when user changes option box selection.

this type of thing (but not work).

<select id="sel_activity" onchange="selectionchange(this.info)">      <option info=""       value="car">car problem</option>      <option info=""       value="coffee">coffee break</option>     <option info="45678"  value="inv">inventory count</option>     <option info="23567"  value="invdrop">inventory</option>     <option info="" value="lunch">lunch break</option>      <option info="87654"  value="meet">meeting</option> </select>  . . .  function selectionchange(info){           alert(info); }

html 5 provides data-* attributes, can define own attributes prefix them data-. data-info, data-zip or whatever.


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