[英]Dynamically adding input text field with label in place of drop down menu
当从下拉菜单中选择特定选项时,我想替换下拉菜单。
当用户从下拉菜单中选择其他时,我想用输入字段替换这个下拉菜单,如
我尝试使用以下代码,但对我不起作用
<div class="form-group">
<label for="location" class="col-sm-2 control-label" style="color: #0E0E0E;white-space: nowrap;">Your Location</label>
<div class="col-sm-10">
<select class="selectpicker form-control" id="location" name="location" required="true">
<option value="jaipur" disabled="disabled" selected="selected">Jaipur</option>
<option value="shimla">Shimla</option>
<option value="bangalore">Bangalore</option>
<option value="hyderabad">Hyderabad</option>
<option value="mumbai">Mumbai</option>
<option value="varansi">Varanasi</option>
<option value="dehradun">Dehradun</option>
<option value="masoori">Masoori</option>
<option value="goa">GOA</option>
<option value="udaipur">Udaipur</option>
<option value="kokata">Kolkata</option>
<option value="agra">Agra</option>
<option value="allahabad">Allahabad</option>
<option value="amritsar">Amritsar</option>
<option value="chandigarh">Chandigarh</option>
<option value="chennai">Chennai</option>
<option value="lucknow">Lucknow</option>
<option value="nanital">Nanital</option>
<option value="ludhiana">Ludhiana</option>
<option value="patiala">Patiala</option>
<option value="others" onclick="addElement();">other</option>
</select>
<input type="hidden" value="0" id="theValue" />
<div id="myDiv"> </div>
</div>
</div>
我正在使用的 JavaScript 是
function addElement() {
var ni = document.getElementById('myDiv');
var numi = document.getElementById('theValue');
var num = (document.getElementById('theValue').value -1)+ 2;
numi.value = num;
var newdiv = document.createElement('div');
var divIdName = 'my'+num+'Div';
newdiv.setAttribute('id',divIdName);
newdiv.innerHTML = 'Element Number '+num+' has been added!';
ni.appendChild(newdiv);
}
有人可以指导我实现预期目标吗?
尝试使用这个。
HTML:
<div class="form-group">
<label for="location" class="col-sm-2 control-label" style="color: #0E0E0E;white-space: nowrap;">Your Location</label>
<div class="col-sm-10">
<select class="selectpicker form-control" id="location" onchange="addElement(this.value)" name="location" required="true">
<option value="jaipur" disabled="disabled" selected="selected">Jaipur</option>
<option value="shimla">Shimla</option>
<option value="bangalore">Bangalore</option>
<option value="hyderabad">Hyderabad</option>
<option value="others">other</option>
</select>
<input type="hidden" value="0" id="theValue" />
<div id="myDiv" class="hide"><input type="text"> </div>
</div>
</div>
查询:
function addElement(value)
{
if(value == 'others')
{
$('#location').addClass('hide');
$('#myDiv').addClass('show');
}
}
CSS:
.hide
{
display : none
}
.show
{
display : block
}
您是否收到任何控制台错误 (F12)? 因为您的代码中缺少 ' 。
function addElement() {
var ni = document.getElementById('myDiv');
var numi = document.getElementById('theValue');
var num = (document.getElementById('theValue').value -1)+ 2;
numi.value = num;
var newdiv = document.createElement('div');
var divIdName = 'my'+num+'Div';
newdiv.setAttribute('id',divIdName);
newdiv.innerHTML = 'Element Number '+num+' has been added!';
ni.appendChild(newdiv);
}
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