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我有一个HTML表单，用户可以根据需要添加和删除行。这部分工作，因为它应该。该行的一部分是带有复选框的下拉列表，这也适用于它。手头的问题是当用户单击添加按钮添加新行时，复选框下拉菜单在新行上不起作用。动态行，下拉式复选框不起作用
对不起，代码块很长，我只是想确保我没有留下这么明显的东西。提前感谢您提供的所有帮助，我对这一切都比较陌生。
HTML代码
<h2>Please fill in the information below</h2>
<form action="pmUnitCreate.php" method="post">
<p>Click the Add button to add a new row. Click the Delete button to Delete last row.</p>
<input type="button" id="btnAdd" class="button-add" onClick="addRow('myTable')" value="Add"/>
<input type="button" id="btnDelete" class="button-delete" onClick="deleteRow('myTable')" value="Delete"/>
<br>
<table id="myTable" class="form">
<tr id="heading">
<th><b><font size="4">Job Number</font></b></th>
<th><b><font size="4">Unit Number</font></b></th>
<th><b><font size="4">Job Code</font></b></th>
<th><b><font size="4">Model Number</font></b></th>
<th><b><font size="4">Scope</font></b></th>
</tr>
<tr id="tableRow">
<td>
<input type="text" name="JobNumber[]" value="<?php echo $JobNumber;?>" readonly>
</td>
<td>
<input type="text" name="UnitID[]" value="<?php echo $JobNumber;?>-01" readonly>
</td>
<td>
<select name="JobCode[]" style="background-color:#FFE68C" required>
<option></option>
<option>F</option>
<option>FS</option>
<option>PD</option>
</select>
</td>
<td>
<input type="text" name="ModelNumber[]" style="background-color:#FFE68C" required>
</td>
<td>
<div id="Scope[]" class="dropdown-check-list" tabindex="100">
<span class="anchor" style="background-color:#FFE68C">Select Scope</span>
<ul id="items" class="items">
<input type="checkbox" name="S1" value="100OA"/><font size="4">100OA</font>
<input type="checkbox" name="S2" value="BTank"/><font size="4">BTank</font>
<input type="checkbox" name="S3" value="WSEcon"/><font size="4">WSEcon</font>
<input type="checkbox" name="S4" value="NetPkg"/><font size="4">NetPkg</font>
<input type="checkbox" name="S5" value="CstmCtrl"/><font size="4">CstmCtrl</font>
<br><br>
<input type="checkbox" name="S6" value="CstmRef"/><font size="4">CstmRef</font>
<input type="checkbox" name="S7" value="CstmSM"/><font size="4">CstmSM</font>
<input type="checkbox" name="S8" value="CstmHV"/><font size="4">CstmHV</font>
<input type="checkbox" name="S9" value="CPCTrl"/><font size="4">CPCtrl</font>
<input type="checkbox" name="S10" value="DesiHW"/><font size="4">DesiHW</font>
<br><br>
<input type="checkbox" name="S11" value="DigScroll"/><font size="4">DigScroll</font>
<input type="checkbox" name="S12" value="DFGas"/><font size="4">DFGas</font>
<input type="checkbox" name="S13" value="DWall"/><font size="4">DWall</font>
<input type="checkbox" name="S14" value="MZ-DD"/><font size="4">MZ-DD</font>
<input type="checkbox" name="S15" value="DPP"/><font size="4">DPP</font>
<input type="checkbox" name="S16" value="Encl"/><font size="4">Encl</font>
<br><br>
<input type="checkbox" name="S17" value="PlateHX"/><font size="4">PlateHX</font>
<input type="checkbox" name="S18" value="ERW"/><font size="4">ERW</font>
<input type="checkbox" name="S19" value="ERWModule"/><font size="4">ERWModule</font>
<input type="checkbox" name="S20" value="ERVMod"/><font size="4">ERVMod </font>
<input type="checkbox" name="S21" value="EvapBP"/><font size="4">EvapBP</font>
<br><br>
<input type="checkbox" name="S22" value="PreEvap"/><font size="4">PreEvap</font>
<input type="checkbox" name="S23" value="XP"/><font size="4">XP</font>
<input type="checkbox" name="S24" value="Extended"/><font size="4">Extend</font>
<input type="checkbox" name="S25" value="FanWall"/><font size="4">FanWall</font>
<input type="checkbox" name="S26" value="FillStat"/><font size="4">FillStat</font>
<input type="checkbox" name="S27" value="FFilt"/><font size="4">FFilt</font>
<br><br>
<input type="checkbox" name="S28" value="PFilt"/><font size="4">PFilt</font>
<input type="checkbox" name="S29" value="CarbFilt"/><font size="4">CarbFilt</font>
<input type="checkbox" name="S30" value="CustFilt"/><font size="4">CustFilt </font>
<input type="checkbox" name="S31" value="MGH(H)"/><font size="4">MGH(H)</font>
<input type="checkbox" name="S32" value="GHeat"/><font size="4">GHeat</font>
<br><br>
<input type="checkbox" name="S33" value="HighStatic"/><font size="4">HighStatic</font>
<input type="checkbox" name="S34" value="HGBP"/><font size="4">HGBP</font>
<input type="checkbox" name="S35" value="HGRH"/><font size="4">HGRH</font>
<input type="checkbox" name="S36" value="HPConv"/><font size="4">HPConv</font>
<input type="checkbox" name="S37" value="GFHumid"/><font size="4">GFHumid</font>
<br><br>
<input type="checkbox" name="S38" value="TOHumid"/><font size="4">TOHumid</font>
<input type="checkbox" name="S39" value="MHGRH"/><font size="4">MHGRH</font>
<input type="checkbox" name="S40" value="LowAF"/><font size="4">LowAF</font>
<input type="checkbox" name="S41" value="LowAFSF"/><font size="4">LowAFSF</font>
<input type="checkbox" name="S42" value="LowAmbient"/><font size="4">LowAmbient</font>
<br><br>
<input type="checkbox" name="S43" value="MEHeat(R)"/><font size="4">MEHeat(R)</font>
<input type="checkbox" name="S44" value="MEHeat(I)"/><font size="4">MEHeat(I)</font>
<input type="checkbox" name="S45" value="MGH(R)"/><font size="4">MGH(R)</font>
<input type="checkbox" name="S46" value="MGH(H)"/><font size="4">MGH(H)</font>
<input type="checkbox" name="S47" value="MtrRR"/><font size="4">MtrRR</font>
<br><br>
<input type="checkbox" name="S48" value="MotorGM"/><font size="4">MotorGM</font>
<input type="checkbox" name="S49" value="MZ-Mod"/><font size="4">MZ-Mod</font>
<input type="checkbox" name="S50" value="NatConv"/><font size="4">NatConv</font>
<input type="checkbox" name="S51" value="OAFMS"/><font size="4">OAFMS</font>
<input type="checkbox" name="S52" value="OSMotor"/><font size="4">OSMotor</font>
<br><br>
<input type="checkbox" name="S53" value="MZ-VAV"/><font size="4">MZ-VAV</font>
<input type="checkbox" name="S54" value="Mon"/><font size="4">Mon</font>
<input type="checkbox" name="S55" value="PumpPkg"/><font size="4">PumpPkg</font>
<input type="checkbox" name="S56" value="PipePkg"/><font size="4">PipePkg</font>
<input type="checkbox" name="S57" value="ServLite"/><font size="4">ServLite</font>
<br><br>
<input type="checkbox" name="S58" value="SparkRes"/><font size="4">SparkRes</font>
<input type="checkbox" name="S59" value="SSLube"/><font size="4">SSLube</font>
<input type="checkbox" name="S60" value="UVLights"/><font size="4">UVLights</font>
<input type="checkbox" name="S61" value="VSComp"/><font size="4">VSComp</font>
<br><br>
<input type="checkbox" name="S62" value="LCVAV"/><font size="4">LCVAV</font>
<input type="checkbox" name="S63" value="XFVAV"/><font size="4">XFVAV</font>
<input type="checkbox" name="S64" value="WCCond"/><font size="4">WCCond</font>
<input type="checkbox" name="S65" value="WSHPConv"/><font size="4">WSHPConv</font>
<input type="checkbox" name="S66" value="3RConv"/><font size="4">3RConv</font>
<br><br>
<input type="checkbox" name="S67" value="WiringGM"/><font size="4">WiringGM</font>
<input type="checkbox" name="S68" value="XFan"/><font size="4">XFan</font>
<input type="checkbox" name="S69" value="RFan"/><font size="4">RFan</font>
<input type="checkbox" name="S70" value="SFan"/><font size="4">SFan</font>
<input type="checkbox" name="S71" value="OAHood"/><font size="4">OAHood</font>
<br><br>
<input type="checkbox" name="S72" value="XAHood"/><font size="4">XAHood</font>
<input type="checkbox" name="S73" value="XALouver"/><font size="4">XALouver</font>
<input type="checkbox" name="S74" value="OALouver"/><font size="4">OALouver</font>
<input type="checkbox" name="S75" value="SteamCoil"/><font size="4">SteamCoil</font>
<input type="checkbox" name="S76" value="HWCoil"/><font size="4">HWCoil</font>
<br><br>
<input type="checkbox" name="S77" value="CHWCoil"/><font size="4">CHWCoil</font>
<input type="checkbox" name="S78" value="CondCoil"/><font size="4">CondCoil</font>
<input type="checkbox" name="S79" value="DXCoil"/><font size="4">DXCoil</font>
<input type="checkbox" name="S80" value="F&BP"/><font size="4">F&BP</font>
<input type="checkbox" name="S81" value="Xfrmr"/><font size="4">Xfrmr</font>
</ul>
</div>
</td>
</tr>
</table>
JS代码
<script>
function incrementUnitId(unitId) {
var arr = unitId.split('-');
if (arr.length === 1) {return;} // The unit id is not valid;
var number = parseInt(arr[1]) + 1;
return arr[0] + '-' + (number < 10 ? 0 : '') + number;
}
function addRow() {
var row = document.getElementById("tableRow"); // find row to copy
var table = document.getElementById("myTable"); // find table to append to
var clone = row.cloneNode(true); // copy children too
row.id = "oldRow"; // We want to take the last value inserted
clone.cells[1].childNodes[1].value = incrementUnitId(clone.cells[1].childNodes[1].value)
table.appendChild(clone); // add new row to end of table
}
function deleteRow() {
document.getElementById("myTable").deleteRow(-1);
}
var checkList = document.getElementById('Scope[]');
var items = document.getElementById('items');
checkList.getElementsByClassName('anchor')[0].onclick = function (evt) {
if (items.classList.contains('visible')){
items.classList.remove('visible');
items.style.display = "none";
}
else{
items.classList.add('visible');
items.style.display = "block";
}
}
items.onblur = function(evt) {
items.classList.remove('visible');
}
</script>
你将click事件附加到第一个锚点checkList.getElementsByClassName（'anchor'）[0] .onclick'，为什么新的应该工作？ –
它适用于第一行。当用户向表中添加新行时，新添加的下拉列表不起作用。 – elliottdan