一、新增一个option var sel=document.getElementById("select的id"); var op=document.createElement("option"); op.value=值; op.text=显示文本; sel.add(op); 二、删除一个option var sel=document.getElementById("typelist"); if(sel.selectedIndex==-1) alert("请选中要删除的项!"); for(var i=...
let selectedValues = Array.from(selectElement.options).filter(option => option.selected).map(option => option.value); 2. 使用querySelectorAll和Array.from 还可以使用CSS选择器配合querySelectorAll来直接找到所有被选中的option元素,然后将它们映射成对应的值数组: let selectedValues = Array.from(document...
<option value="banana">Banana</option> <option value="cherry">Cherry</option> </select> <button onclick="getSelectedValues()">Get Selected Values</button> <script> function getSelectedValues() { var selectElement = document.getElementById('myMultiSelect'); var selectedValues = Array.from(se...
3、移动Select里的Option到另一个Select中 function fnMove(fromSelectID,toSelectID) { var from = document.getElementById(fromSelectID); var to = document.getElementById(toSelectID); for(var i=0;i<from.options.length;i++) { if(from.options[i].selected) { to.appendChild(from.options[i])...
from.remove(i); 4、Select里Option的上下移动 functionfnUp() { varsel=document.getElementById("selID"); for(vari=1; i<sel.length; i++) {//最上面的一个不需要移动,所以直接从i=1开始 if(sel.options[i].selected) { if(!sel.options.item(i-1).selected) ...
</b><p>Select one from the given options:<selectid="select1"><optionvalue="free">Free</option><optionvalue="basic">Basic</option><optionvalue="premium">Premium</option></select></p><p>The value of the option selected is:<spanclass="output"></span></p><buttononclick="getOption(...
window.document.getElementById("bigclass").value 获取select组分配的索引id window.document.getElementById("bigclass").selectedIndex 例子: <select name="bigclass" id="bigclass" onChange="javascript:updatePage2();"> <option value="" selected="selected">ajax实验</option> ...
//获取网络连接信息 function ipinfo() { var properties = service.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration Where IPEnabled=TRUE"); var e = new Enumerator(properties); var info = "<table border1>"; info += "<tr bgcolor='#CDEDED' style='font-weight: bold;' ><td width...
如何从MySQL获取select/option标记的值 您需要执行以下操作: <select class="form-select" aria-label="Default select example"> <option value="" disabled selected>Agent</option> <?php $query = $conn->query("SELECT * FROM `agents`"); if ($query) { while($fetch = $query->fetch_array()) ...
();// Get all the cells from the currently selected range to the bottom-most edge of the used range.// This method acts like the Ctrl+Shift+Down arrow key keyboard shortcut while a range is selected.letextendedRange = range.getExtendedRange( direction, activeCell ); extendedRange.select(...