获取复选框总计数并在文本框中保存值（如果选中）

Question

I have written below code to get a total count of Checked chechbox and save the value checked value comma separated in textbox.

HTML:

<label class='checkbox-inline'><input type='checkbox' class='checkbox-btn' value='1' onchange='checkCount(this.value);'></label>
<label class='checkbox-inline'><input type='checkbox' class='checkbox-btn' value='2' onchange='checkCount(this.value);'></label>
<label class='checkbox-inline'><input type='checkbox' class='checkbox-btn' value='3' onchange='checkCount(this.value);'></label>

<input type="text" name="proId" id="proId">

JS:

function checkCount(elm) {
  var cheCount = $(":checkbox:checked").length;
  document.getElementById('selectCount').innerHTML = cheCount;

  definVal = document.getElementById('proId').value ;
  var inval = elm+","+definVal;
  document.getElementById('proId').value = inval;

  if(cheCount==0){
    document.getElementById('proId').value = "";
  }
}

Check the output in below image:

My issue is that, when i unchecked the checkbox, its value is adding in textbox instead of getting remove.

Answer 1

Make below changes, just call js method dont send its value

And then check by their classname

 function checkCount(elm) { var checkboxes = document.getElementsByClassName("checkbox-btn"); var selected = []; for (var i = 0; i < checkboxes.length; ++i) { if(checkboxes[i].checked){ selected.push(checkboxes[i].value); } } document.getElementById("proId").value = selected.join(); document.getElementById("total").innerHTML = selected.length; } 

 <label class='checkbox-inline'><input type='checkbox' class='checkbox-btn' value='1' onchange='checkCount();'></label> <label class='checkbox-inline'><input type='checkbox' class='checkbox-btn' value='2' onchange='checkCount();'></label> <label class='checkbox-inline'><input type='checkbox' class='checkbox-btn' value='3' onchange='checkCount();'></label> <input type="text" name="proId" id="proId"> <div>Total Selected : <span id="total">0</span></div>