我的表单代码中有一个用户下拉菜单，用户可以选择他们的选项来处理他们的请求。 div ID的范围从fa1到fa8。默认情况下，我在表单中显示fa1和fa2，fa3到fa8设置为{{1 }}。我添加了一个按钮以添加删除附加下拉菜单取决于用户要求（将显示\ hide display: none至fa3）
我可以在使用
提交表单后保留用户选择的选项fa8我在这里遇到的问题是，如果用户添加了一个addiotnal div（比如说<option <?php if ($_POST['fa-select-1']==1) {echo "selected='selected'"; } ?> >1</option>
），选择了下拉选项并提交了表单，隐藏的div不会在提交后显示（尽管它保持下拉状态为用户选择的）
我想在表单提交后显示隐藏的div（如果用户已添加）以及所选选项
我的HTML代码：
fa3我的javascript添加\删除隐藏的div（最小它将显示两个div和最多8，我已添加以禁用添加或删除按钮取决于其最大\最小计数）
<div class="block-no-height">
<div class="sub_headings"> Select Your FA director and Port</div>
<div class="wrap-quest-resp" id="fa1">
<div class="input-quest-no-height">FA and port - 1</div>
<div class="input-resp-no-height">
<select id="fa-select-1" name="fa-select-1">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-1']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-1']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-1']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-1']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-1']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-1']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-1']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-1']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-1']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-1']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-1']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-1']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-1']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-1']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-1']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-1']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-1" name="proc-select-1">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-1']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-1']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-1']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-1']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-1" name="port-select-1">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-1']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-1']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa2">
<div class="input-quest-no-height">FA and port - 2</div>
<div class="input-resp-no-height">
<select id="fa-select-2" name="fa-select-2">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-2']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-2']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-2']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-2']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-2']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-2']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-2']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-2']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-2']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-2']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-2']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-2']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-2']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-2']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-2']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-2']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-2" name="proc-select-2">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-2']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-2']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-2']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-2']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-2" name="port-select-2">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-2']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-2']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa3" style="display:none;" disabled="true">
<div class="input-quest-no-height">FA and port - 3</div>
<div class="input-resp-no-height">
<select id="fa-select-3" name="fa-select-3">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-3']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-3']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-3']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-3']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-3']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-3']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-3']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-3']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-3']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-3']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-3']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-3']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-3']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-3']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-3']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-3']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-3" name="proc-select-3">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-3']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-3']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-3']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-3']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-3" name="port-select-3">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-3']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-3']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa4" style="display:none;" >
<div class="input-quest-no-height">FA and port - 4</div>
<div class="input-resp-no-height">
<select id="fa-select-4" name="fa-select-4">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-4']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-4']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-4']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-4']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-4']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-4']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-4']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-4']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-4']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-4']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-4']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-4']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-4']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-4']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-4']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-4']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-4" name="proc-select-4">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-4']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-4']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-4']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-4']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-4" name="port-select-4">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-4']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-4']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa5" style="display:none;" >
<div class="input-quest-no-height">FA and port - 5</div>
<div class="input-resp-no-height">
<select id="fa-select-5" name="fa-select-5">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-5']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-5']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-5']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-5']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-5']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-5']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-5']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-5']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-5']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-5']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-5']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-5']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-5']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-5']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-5']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-5']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-5" name="proc-select-5">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-5']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-5']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-5']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-5']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-5" name="port-select-5">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-5']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-5']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa6" style="display:none;" >
<div class="input-quest-no-height">FA and port - 6</div>
<div class="input-resp-no-height">
<select id="fa-select-6" name="fa-select-6">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-6']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-6']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-6']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-6']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-6']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-6']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-6']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-6']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-6']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-6']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-6']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-6']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-6']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-6']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-6']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-6']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-6" name="proc-select-6">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-6']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-6']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-6']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-6']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-6" name="port-select-6">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-6']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-6']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa7" style="display:none;" >
<div class="input-quest-no-height">FA and port - 7</div>
<div class="input-resp-no-height">
<select id="fa-select-7" name="fa-select-7">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-7']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-7']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-7']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-7']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-7']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-7']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-7']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-7']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-7']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-7']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-7']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-7']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-7']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-7']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-7']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-7']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-7" name="proc-select-7">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-7']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-7']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-7']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-7']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-7" name="port-select-7">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-7']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-7']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="wrap-quest-resp" id="fa8" style="display:none;" >
<div class="input-quest-no-height">FA and port - 8</div>
<div class="input-resp-no-height">
<select id="fa-select-8" name="fa-select-8">
<option disabled="disabled" SELECTED >Dir</option>
<option <?php if ($_POST['fa-select-8']==1) {echo "selected='selected'"; } ?> >1</option>
<option <?php if ($_POST['fa-select-8']==2) {echo "selected='selected'"; } ?> >2</option>
<option <?php if ($_POST['fa-select-8']==3) {echo "selected='selected'"; } ?> >3</option>
<option <?php if ($_POST['fa-select-8']==4) {echo "selected='selected'"; } ?> >4</option>
<option <?php if ($_POST['fa-select-8']==5) {echo "selected='selected'"; } ?> >5</option>
<option <?php if ($_POST['fa-select-8']==6) {echo "selected='selected'"; } ?> >6</option>
<option <?php if ($_POST['fa-select-8']==7) {echo "selected='selected'"; } ?> >7</option>
<option <?php if ($_POST['fa-select-8']==8) {echo "selected='selected'"; } ?> >8</option>
<option <?php if ($_POST['fa-select-8']==9) {echo "selected='selected'"; } ?> >9</option>
<option <?php if ($_POST['fa-select-8']==10) {echo "selected='selected'"; } ?> >10</option>
<option <?php if ($_POST['fa-select-8']==11) {echo "selected='selected'"; } ?> >11</option>
<option <?php if ($_POST['fa-select-8']==12) {echo "selected='selected'"; } ?> >12</option>
<option <?php if ($_POST['fa-select-8']==13) {echo "selected='selected'"; } ?> >13</option>
<option <?php if ($_POST['fa-select-8']==14) {echo "selected='selected'"; } ?> >14</option>
<option <?php if ($_POST['fa-select-8']==15) {echo "selected='selected'"; } ?> >15</option>
<option <?php if ($_POST['fa-select-8']==16) {echo "selected='selected'"; } ?> >16</option>
</select>
<select id="proc-select-8" name="proc-select-8">
<option disabled="disabled" SELECTED >Proc</option>
<option <?php if ($_POST['proc-select-8']==a) {echo "selected='selected'"; } ?> >a</option>
<option <?php if ($_POST['proc-select-8']==b) {echo "selected='selected'"; } ?> >b</option>
<option <?php if ($_POST['proc-select-8']==c) {echo "selected='selected'"; } ?> >c</option>
<option <?php if ($_POST['proc-select-8']==d) {echo "selected='selected'"; } ?> >d</option>
</select>
<select id="port-select-8" name="port-select-8">
<option disabled="disabled" SELECTED >Port</option>
<option <?php if ($_POST['port-select-8']==0) {echo "selected='selected'"; } ?> >0</option>
<option <?php if ($_POST['port-select-8']==1) {echo "selected='selected'"; } ?> >1</option>
</select>
</div>
</div>
<div class="add_remove_column">
<input type="hidden" id="countfa" name="countfa" value="3" readonly>
<button type="button" onClick="AddNewFa();" id="addfa" > + Add New FA </button>
<button type="button" onClick="RemoveNewFa();" id="removefa" disabled="disabled"> - Remove FA</button>
</div>
</div>