为什么"\n"即使被告知不要创建新行？

Question

即使在被告知没有复制时,我也会遇到"\n"创建一条线的问题.修复可能是一些简单的事情,我只是因为某种原因没有看到.我很感激对此问题的任何意见或指导.

(请只给我Javascript答案,因为我对jquery或其他方法不感兴趣)

       <script type="text/javascript">

        if (pullDownResponseE == "")
        {
        }
        else {
        var pullDownValuesE = document.getElementById("taskOne");
        var pullDownResponseE = pullDownValuesE.options[pullDownValuesE.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponseE;
        }


        if (pullDownResponseF == "")
        {
        }
        else{
        var pullDownValuesF = document.getElementById("taskTwo");
        var pullDownResponseF = pullDownValuesF.options[pullDownValuesF.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponseF;
        }

        </script>

正如您所看到的,如果我的下拉值等于""并且此部分大部分工作,则pullDownResponseF和pullDownReponseE不会执行任何操作,它不执行新行"\n"部分的任何其他代码EXCEPT.

任何人都可以解释这里出了什么问题吗？

编辑:拥有更多代码可能会有所帮助.我只会包含必要部分,因为它太长了.

        <script type="text/javascript">

        function copyNotesTemplate()
        { 

        var stuffToCopy = document.getElementById('myForm').value;
        if(stuffToCopy.length > 1)
        {
        var stuffToCopy = "PT meets criteria" + "\n" + document.getElementById('myForm').value;
        }
        if(document.getElementById('noPtCriteria').checked)
        {
        var stuffToCopy = document.getElementById('noPtCriteria').value;
        }


        if (pullDownResponsee == "")
        {
        }
        else {
        var pullDownValuese = document.getElementById("taskOne");
        var pullDownResponsee = pullDownValuese.options[pullDownValuese.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponsee;
        }


        if (pullDownResponsef == "")
        {
        }
        else{
        var pullDownValuesf = document.getElementById("taskTwo");
        var pullDownResponsef = pullDownValuesf.options[pullDownValuesf.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponsef;
        }

        if (pullDownResponseg == "")
        {
        }
        else{
        var pullDownValuesg = document.getElementById("taskThree");
        var pullDownResponseg = pullDownValuesg.options[pullDownValuesg.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponseg;
        }

        var tempValues = document.getElementById('whatUpdate').value
        if(tempValues.length > 1) 
        {
        var stuffToCopy = stuffToCopy + "Updated" + " " + document.getElementById('whatUpdate').value + " ";
        }
        else{
        }

        var tempValuess = document.getElementById('whatInfo').value
        if(tempValuess.length > 1) 
        {
        var stuffToCopy = stuffToCopy + "per" + " " + document.getElementById('whatInfo').value + "\n";
        }
        else{
        }

        var tempValue = document.getElementById('whatDSCRP').value
        if(tempValue.length > 1) 
        {
        var stuffToCopy = stuffToCopy + document.getElementById('whatDSCRP').value + " " + "dscrp on Collection tube and trf was resolved using" + " ";
        }
        else{
        }


        var tempValue = document.getElementById('resolveIT').value
        if(tempValue.length > 1) 
        {
        var stuffToCopy = stuffToCopy + document.getElementById('resolveIT').value + " ";
        }
        else{
        }

        var tempValue = document.getElementById('tubeCorrect').value
        if(tempValue.length > 1) 
        {
        var stuffToCopy = stuffToCopy + "trf was" + " " + document.getElementById('tubeCorrect').value;
        }
        else{
        }


        if(stuffToCopy.length > 1)
        {
        var stuffToCopy = stuffToCopy + "\n" + document.getElementById('moreNotes').value;
        }
        else{
        }

        if (pullDownResponsesu == "")
        {
        }
        else{
        var pullDownValuesu = document.getElementById("mod33Apply");
        var pullDownResponsesu = pullDownValuesu.options[pullDownValuesu.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponsesu;
        }

        if (pullDownResponsesb == "")
        {
        }
        else{
        var pullDownValuesb = document.getElementById("resultICR");
        var pullDownResponsesb = pullDownValuesb.options[pullDownValuesb.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponsesb + "," + " ";
        }

        if (pullDownResponsesc == "")
        {
        }
        else{
        var pullDownValuesc = document.getElementById("moneyNCIS");
        var pullDownResponsesc = pullDownValuesc.options[pullDownValuesc.selectedIndex].value;
        stuffToCopy = stuffToCopy + pullDownResponsesc + " ";
        }

        if (pullDownResponsesd == "")
        {
        }
        else{
        var pullDownValuesd = document.getElementById("resultMMT");
        var pullDownResponsesd = pullDownValuesd.options[pullDownValuesd.selectedIndex].value;
        stuffToCopy = stuffToCopy + pullDownResponsesd;
        }


        if(stuffToCopy.length > 1)
        {
        var stuffToCopy = stuffToCopy + " " + "Reason:" + " " + document.getElementById('whyNotEligible').value;
        }
        else{
        }

        if (pullDownResponsesa == "")
        {
        }
        else{
        var pullDownValuesa = document.getElementById("testReleased");
        var pullDownResponsesa = pullDownValuesa.options[pullDownValuesa.selectedIndex].value;
        stuffToCopy = stuffToCopy + "\n" + pullDownResponsesa;
        }
        window.clipboardData.setData('text', stuffToCopy);
        }
        </script>

如果有人在此示例中跳过填写注释字段或跳过下拉列表,那么它将不会像我预期的那样执行代码,但是在复制时会创建一个新行:

taskOne已选中

(由于没有选择任务2,因此这里有额外的行)

taskThree已选中

如果跳过任务2,我希望在第一和第三任务之间没有额外的一行.像这样:

taskOne已选中

taskThree已选中

注意:我知道有其他{}没有意义,但它在视觉上有所帮助.

我创建了从我的工具中复制/粘贴时的样子剪辑,如果您愿意,可以在此处查看:

示例1:http://imgur.com/wGO5vnT

示例2:http://imgur.com/UX1tG5S

这是我的html的一个例子:

<html lang="en">
  What tasks are needed for the case?
  <br />
  <select class="style3" id="taskOne">
  <option value=""></option>
  <option value="ABN needed">ABN needed</option>
  <option value="Auth needed">Auth needed</option>
  </select>
  </html>

Answer 1

不，它不会添加新行，请参阅：

stuffToCopy = "";
controlGroup = "a\nb";
pullDownResponseE = "";

if (pullDownResponseE == "")
{
}
else {
    var pullDownValuesE = "taskOne";
    var pullDownResponseE = "value";
    stuffToCopy = stuffToCopy + "\n" + pullDownResponseE;
}
alert("stuffToCopy:"+stuffToCopy+";(no new-line here)\ncontrolGroup:"+controlGroup);

我的猜测是，您的 html 打印方式使得您从输入中获得的值在末尾包含一个额外的换行符。尝试将 html 更改为 1 行，不换行，然后再次测试。

代替：

<option value="a
">b
</option>

尝试：

<option value="a">b</option>