已選角色：<br /> <select multiple="multiple" name="roleIds" size="10" id="roleIds"> <option value="1"> 主任 </option> <option value="2"> 醫(yī)師 </option><option value="3"> 護(hù)士 </option><option value="4"> 前臺(tái) </option><option value="5"> 內(nèi)勤 </option> </select> <input type="button" value="<<-添加" onclick="moveOptions(document.getElementById('roleList'),document.getElementById('roleIds'));" /> <input type="button" value="移除->>" class="btn1" onclick="moveOptions(document.getElementById('roleIds'),document.getElementById('roleList'));" /> <br/> 備選角色：<br /> <select multiple="multiple" size="10" id="roleList"> <option value="6"> 工程師1 </option><option value="7"> 工程師2 </option><option value="8"> 工程師3 </option><option value="9"> 工程師4 </option><option value="10"> 工程師5 </option><option value="11"> 工程師6 </option> </select>

function moveOptions(oSource, oTarget) { while (oSource.selectedIndex > -1) { var opt = oSource.options[oSource.selectedIndex]; oSource.removeChild(opt); var mark = true; for(var i = 0; i < oTarget.options.length; i++){ if(opt.value == oTarget.options[i].value){ mark = false; } } if(mark){ var newOpt = document.createElement("OPTION"); oTarget.appendChild(newOpt); newOpt.value = opt.value; newOpt.text = opt.text; newOpt.selected = true; } } }