js select tag value acquisition code_form special effects

<select name="ciname" onchange="change(this)"> <option value="1"> </option>11<option value="2"> </option>22<option value="3"> </option>33</select>
[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute

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onchange="change(this )" At this time this represents the select tag itself