Question

我想制作一个JavaScript function，在按下button后，会将checkbox个元素列表及其内容，全部检查 { {1}}，使用这些checkboxes创建div元素，并将结果写入 checkboxes表单。

这是我的代码：

HTML

这是包含复选框元素列表的HTML Div元素。它们也是动态出现的。最初，Div是空的。

function  confirmDrivers() {     
   $('#selectedList').find('.chk').prop("checked", true);
   var list = document.getElementById('selectedList').getElementsByTagName("li");
   var myForm = document.getElementById('formInput');
   var text = "<strong>Selected Drivers: </strong> <br><br>";
   var myDiv = document.createElement("div");
   myDiv.setAttribute("id","selectedInputDrivers");
   myDiv.style.overflowY = "auto";
   myDiv.style.maxHeight = "100px";
   myDiv.style.maxWidth = "250px";

   for (i = list.length - 1; i >= 0; i--) {                        
      myDiv.innerHTML = list[i].innerHTML+'<br>'+myDiv.innerHTML;                 
   }            
   $("formInput").find('.chk').prop("checked", true);
   myForm.innerHTML = myDiv.outerHTML + myForm.innerHTML;
   myForm.innerHTML = text + myForm.innerHTML;
}

这是HTML表单，我想要显示结果：

<div id = "selectedList" class = "col" style=" max-height:200px; max-width:500px;display: inline-block; background:#A8D9F1; overflow-y:auto">
<strong style="margin-right:10px">Selected List of Drivers</strong>
<input type="button" style="margin-right:10px" value="Remove All"  name="removeAllDr" onclick="removeAllDrivers()"  />
<input type="button" id="confirmD" value="Confirm"  name="confirm" onclick="confirmDrivers()"  />
<br><br>


</div>

此处的问题是它会检查我的列表中的所有<form id="formInput"> </form>，但在生成的 checkboxes表单中，它们会再次显示为未选中状态。什么是错误呢？谢谢

Answer 1

除了将prop（）替换为attr（），因为Rik Lewis正确推荐你可以交替放线

$（＆＃34; formInput＆＃34;）。find（＆＃39; .chk＆＃39;）。prop（＆＃34; checked＆＃34;，true）; < / p>

在函数的底部，并在选择器ID前面添加＃字符，如下所示：

function  confirmDrivers() {     
   $('#selectedList').find('.chk').prop("checked", true);
   var list = document.getElementById('selectedList').getElementsByTagName("li");
   var myForm = document.getElementById('formInput');
   var text = "<strong>Selected Drivers: </strong> <br><br>";
   var myDiv = document.createElement("div");
   myDiv.setAttribute("id","selectedInputDrivers");
   myDiv.style.overflowY = "auto";
   myDiv.style.maxHeight = "100px";
   myDiv.style.maxWidth = "250px";

   for (i = list.length - 1; i >= 0; i--) {                        
      myDiv.innerHTML = list[i].innerHTML+'<br>'+myDiv.innerHTML;                 
   }            
   myForm.innerHTML = myDiv.outerHTML + myForm.innerHTML;
   myForm.innerHTML = text + myForm.innerHTML;
   $("#formInput").find('.chk').prop("checked", true);
}

＆＃13;

					function confirmDrivers() {
					  $('#selectedList').find('.chk').prop("checked", true);
					  var list = document.getElementById('selectedList').getElementsByTagName("li");
					  var myForm = document.getElementById('formInput');
					  var text = "<strong>Selected Drivers: </strong> <br><br>";
					  var myDiv = document.createElement("div");
					  myDiv.setAttribute("id", "selectedInputDrivers");
					  myDiv.style.overflowY = "auto";
					  myDiv.style.maxHeight = "100px";
					  myDiv.style.maxWidth = "250px";

					  for (i = list.length - 1; i >= 0; i--) {
					    myDiv.innerHTML = list[i].innerHTML + '<br>' + myDiv.innerHTML;
					  }
					  myForm.innerHTML = myDiv.outerHTML + myForm.innerHTML;
					  myForm.innerHTML = text + myForm.innerHTML;
					  $("#formInput").find('.chk').prop("checked", true);
					}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="selectedList" class="col" style=" max-height:200px; max-width:500px;display: inline-block; background:#A8D9F1; overflow-y:auto">
  <strong style="margin-right:10px">Selected List of Drivers</strong>
  <input type="button" style="margin-right:10px" value="Remove All" name="removeAllDr" onclick="removeAllDrivers()" />
  <input type="button" id="confirmD" value="Confirm" name="confirm" onclick="confirmDrivers()" />
  <br>
  <br>
  <ul>
    <li>
      <input type="checkbox" class="chk" value="test" />
    </li>
    <li>
      <input type="checkbox" class="chk" value="test" />
    </li>
    <ul>
</div>
<form id="formInput">

</form>

＆＃13;

Answer 2

<div id="cblist">
    <input type="checkbox" value="first checkbox" id="cb1" /> <label for="cb1">first checkbox</label>
</div>

<input type="text" id="txtName" />
<input type="button" value="ok" id="btnSave" />

<script type="text/javascript">
$(document).ready(function() {
    $('#btnSave').click(function() {
        addCheckbox($('#txtName').val());
    });
});

function addCheckbox(name) {
   var container = $('#cblist');
   var inputs = container.find('input');
   var id = inputs.length+1;

   var html = '<input type="checkbox" id="cb'+id+'" value="'+name+'" /> <label for="cb'+id+'">'+name+'</label>';
   container.append($(html));
}
</script>

如何动态地将已选中的复选框元素添加到Div中？

2 个答案: