使用JQuery在單擊按鈕時將行添加到表

Question

我正在使用下面的C＃生成表。 我需要一種添加按鈕（在html表末尾的單獨行中）的方法，該按鈕在按下時將添加新的文本框行。

如何在JQuery / JavaScript中實現？

protected void btnGreen_Click(object sender, EventArgs e)
{
    StringBuilder sb = new StringBuilder(string.Empty);
    sb.Append("<table>");
    sb.Append("<tr>");
    sb.Append("<th>Spl</th>");
    foreach (System.Web.UI.WebControls.ListItem item in cbxTest.Items)
    {

        if (item.Selected) { sb.Append("<th>" + columnname + "</th>"); }
    }
    sb.Append("</tr>"); 
    int z = 2;
    sb.Append("<td><input type=\"text\" name=\"field1\"></td>");
    foreach (System.Web.UI.WebControls.ListItem item in cbxTest.Items)
    {
        if(item.Selected) { sb.Append("<td><input type=\"text\" name=\"field " + z + "\"></td>"); }
        z = z + 1;
    }   
    sb.Append("</tr>");
    sb.Append("</table>");
    other.InnerHtml = sb.ToString();
}

Answer 1

我建議這個

protected void btnGreen_Click(object sender, EventArgs e)
{
    StringBuilder sb = new StringBuilder(string.Empty);
    sb.Append("<table id=\"tab\">");
    sb.Append("<thead>");
    sb.Append("<tr>");
    sb.Append("<th>Spl</th>");
    foreach (System.Web.UI.WebControls.ListItem item in cbxTest.Items)
    {

        if (item.Selected) { sb.Append("<th>" + columnname + "</th>"); }
    }
    sb.Append("</tr>"); 
    sb.Append("</thead>");
    sb.Append("<tbody>");
    sb.Append("<tr>");

    int z = 2;
    sb.Append("<td><input type=\"text\" name=\"field1\"></td>");
    foreach (System.Web.UI.WebControls.ListItem item in cbxTest.Items)
    {
        if(item.Selected) { sb.Append("<td><input type=\"text\" name=\"field " + z + "\"></td>"); }
        z = z + 1;
    }   
    sb.Append("</tr>");
    sb.Append("</tbody>");
    sb.Append("<tfoot>");
    sb.Append("<tr><td><button id=\"add\" type=\"button\">Add</button></td></tr>");
    sb.Append("</tfoot>");
    sb.Append("</table>");
    other.InnerHtml = sb.ToString();
}

jQuery的：

$(function() {
  $("#add").on("click",function() {
    var $row = $("#tab tbody tr").first().clone();
    $row.find("input").val(""); // here you can also change names if needed
    $("#tab tbody").append($row);
  });
});

例：

 $(function() { $("#add").on("click", function() { var $row = $("#tab tbody tr").first().clone(); $row.find("input").val(""); // here you can also change names if needed $("#tab tbody").append($row); }); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <table id="tab"> <thead> <tr> <th>Spl</th> <th>columnname1</th> <th>columnname2</th> <th>columnname3</th> </tr> </thead> <tbody> <tr> <td><input type="text" name="field1"></td> <td><input type="text" name="field 2"></td> <td><input type="text" name="field 3"></td> <td><input type="text" name="field 4"></td> </tr> </tbody> <tfoot> <tr> <td><button id="add" type="button">Add</button></td> </tr> </tfoot> </table>