How can select table cells of dynamically created table using javascript

Question

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HI, Sorry for my English

I have created a dynamic table using c#, Now I want to select the table cells based on id and that table cells to change color when they are clicked using javascript. How can i achieve this??

Thanks.

What I have tried:

Here is my code behind:

private void CreateDynamicTable()
{

    int rowCnt;
    int cellCnt;
    int rowCtr;
    int cellCtr;

    Table Table1 = new Table();
    Table1.BorderWidth = 3;
    Table1.BorderStyle = BorderStyle.Solid;
    Table1.ID = "myTable";

    rowCnt = int.Parse(txtrow.Text);
    cellCnt = int.Parse(txtcol.Text);

    for (rowCtr = 1; rowCtr <= rowCnt; rowCtr++)
    {
        TableRow tRow = new TableRow();
        Table1.Rows.Add(tRow);
        for (cellCtr = 1; cellCtr <= cellCnt; cellCtr++)
        {
            TableCell tCell = new TableCell();
            tRow.Cells.Add(tCell);
            string prodID = rowCtr + "_" + cellCtr;

            TextBox txtbox = new TextBox();
            txtbox.Text = "Row:" + rowCtr + "  Column:" + " " + cellCtr;
            tCell.Controls.Add(txtbox);

            tRow.Controls.Add(tCell);
        }
        Table1.Rows.Add(tRow);
    }
    form1.Controls.Add(Table1);
}

HTML:

HTML

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <link href="StyleSheet1.css" rel="stylesheet" />
    <title></title>
</head>
<body>
    
    <form id="form1" runat="server">
       <div>
            <table>
                Creating a dyanamic Table
                <tr>
                    <td>Row:     
                        <asp:TextBox ID="txtrow" placeholder="No of Rows Here" runat="server" AutoCompleteType="Disabled"></asp:TextBox>

                        <br />
                        <br />
                    </td>
                </tr>
                <tr>
                    <td>Coloum:
                        <asp:TextBox ID="txtcol" placeholder="No of Coloums Here" runat="server" AutoCompleteType="Disabled"></asp:TextBox>

                        <br />
                        <br />
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Button ID="Button1" Text="Create Table" runat="server" CssClass="button1" OnClick="OnClickOfCreateTable" />
                    </td>
                </tr>
            </table>
         </div>
       </body>
    </html>

Posted 5-Sep-18 2:58am

Syf AK

Updated 7-Sep-18 19:46pm

v2

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3 solutions

Solution 2

while creating the dynamic table, just add the id to each td(cell) and add a javascript function and remove the highlight class and add the highlight class to current cell where you click. try the below code:

<html>
<head>
<style>
.highlight{
background-color:red;
color:white;
}
</style>
<script>
function abc(index){
var rr=document.getElementsByTagName("td");
for(var i=0; i<rr.length;i++){
rr[i].className=rr[0].className.replace("highlight", "");
}
var ss=document.getElementById(index);
ss.className="highlight";
}
</script>
</head>
<body>
<table >
<tr>
<td onclick="abc(1)" id="1" class="highlight">1</td>
<td onclick="abc(2)" id="2" class="highlight">vivek</td>
</tr>
<tr>
<td onclick="abc(3)" id="3" class="highlight">2</td>
<td onclick="abc(4)" id="4" class="highlight">Chaudhary</td>
</tr>
<tr>
<td onclick="abc(5)" id="5" class="highlight">3</td>
<td onclick="abc(6)" id="6" class="highlight">dk</td>
</tr>
</table>

</body>
</html>

Posted 6-Sep-18 8:06am

Member 10371658

Comments

Syf AK 7-Sep-18 6:30am

Thanks for the replay, i am generating table based on user inputs how can i add tds.

Syf AK 9-Sep-18 6:40am

Can u please tell me how to retain a state of a dynamically created table across post back, my ui consists of two buttons. On clicking the second button the table is not retains its state. Same above example. @Member 10371658

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Vincent Maverick Durano · Accepted Answer · 2018-09-06T04:15:00

You should be able to easily do that with jQuery. First, define a css:

CSS

.highlight { background-color: green; }

then, you can do something like this:

JavaScript

$("#myTable tr").click(function() {
    var selected = $(this).hasClass("highlight");
    $("#myTable tr").removeClass("highlight");
    if(!selected)
            $(this).addClass("highlight");
});

Member 10371658 · Accepted Answer · 2018-09-07T19:46:00

try the below code:
HTML & javascript code:

<!DOCTYPE html>
<html>
<head id="Head1" runat="server">

    <title></title>

    <style>
        .highlight {
            background-color: red;
            color: white;
        }
    </style>
    <script>
        function abc(index) {
            var rr = document.getElementsByClassName("highlight");
            for (var i = 0; i < rr.length; i++) {
                rr[i].className = rr[0].className.replace("highlight", "");
            }
            var ss = document.getElementById(index);
            ss.className = "highlight";
        }

    </script>
</head>
<body>

    <form id="form1" runat="server">
        <div>
            <table>
                Creating a dyanamic Table
                <tr>
                    <td>Row:     
                        <asp:TextBox ID="txtrow" placeholder="No of Rows Here" runat="server" AutoCompleteType="Disabled"></asp:TextBox>

                        <br />
                        <br />
                    </td>
                </tr>
                <tr>
                    <td>Coloum:
                        <asp:TextBox ID="txtcol" placeholder="No of Coloums Here" runat="server" AutoCompleteType="Disabled"></asp:TextBox>

                        <br />
                        <br />
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Button ID="Button1" Text="Create Table" runat="server" CssClass="button1" OnClick="Button1_Click" />
                    </td>
                </tr>
            </table>
        </div>
    </form>
</body>
</html>

code behind code:

protected void Button1_Click(object sender, EventArgs e)
       {
           CreateDynamicTable();
       }

       private void CreateDynamicTable()
       {

           int rowCnt;
           int cellCnt;
           int rowCtr;
           int cellCtr;

           Table Table1 = new Table();
           Table1.BorderWidth = 3;
           Table1.BorderStyle = BorderStyle.Solid;
           Table1.ID = "myTable";

           rowCnt = int.Parse(txtrow.Text);
           cellCnt = int.Parse(txtcol.Text);

           for (rowCtr = 1; rowCtr <= rowCnt; rowCtr++)
           {
               TableRow tRow = new TableRow();
               Table1.Rows.Add(tRow);
               for (cellCtr = 1; cellCtr <= cellCnt; cellCtr++)
               {
                   TableCell tCell = new TableCell();

                   tRow.Cells.Add(tCell);
                   string prodID = rowCtr + "_" + cellCtr;



                   TextBox txtbox = new TextBox();
                   txtbox.Text = "Row:" + rowCtr + "  Column:" + " " + cellCtr;


                   txtbox.Attributes.Add("id", prodID);

                   txtbox.Attributes.Add("onfocus", "abc('" + prodID + "')");
                   tCell.Controls.Add(txtbox);



                   tRow.Controls.Add(tCell);
               }
               Table1.Rows.Add(tRow);
           }
           form1.Controls.Add(Table1);
       }

How can select table cells of dynamically created table using javascript

3 solutions

Solution 1

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Solution 2

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