Geek asks and answers

Dynamicaly removes table row using checkbox and javascript

How can we dynamically delete html table rows using javascript. We have a check box for each row. When you click the delete button with the checkbox selected, the line will be deleted. Such as document.getElementById (j) .innerHTML = '';

+3
source share
3 answers

Removing an element is best done using DOM node functions, such as removeChild, rather than innerHTML-hacking. eg:.

function removeAllRowsContainingCheckedCheckbox(table) {
    for (var rowi= table.rows.length; rowi-->0;) {
        var row= table.rows[rowi];
        var inputs= row.getElementsByTagName('input');
        for (var inputi= inputs.length; inputi-->0;) {
            var input= inputs[inputi];

            if (input.type==='checkbox' && input.checked) {
                row.parentNode.removeChild(row);
                break;
            }
        }
    }
}
+4
source

Here is a small layout on how to do this:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
       "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Mockup</title>
<script type="text/javascript">
function killRow(src) {
    var dRow = src.parentElement.parentElement;  
    document.all("table").deleteRow(dRow.rowIndex);  
}
</script>
</head>
<body>

<form action="something.html">
<table id="table">
    <tr>
        <td><input type='checkbox' onclick='killRow(this);'>Click me!</td>
        <td>Demodata 1</td>
    </tr>
    <tr>
        <td><input type='checkbox' onclick='killRow(this);'>Click me!</td>
        <td>Demodata 2</td>
    </tr>
</table>
</form>

</body>
</html>

The key to this is the JScript function, which can then be used from any line. This may be even more generalized. When you click on the checkboxes, the function is called.

innerHTML , DOM- ( parentElement).

+2

Here is a function that performs the required row deletion action by checking the value of the checkbox. Call this function in the onclick event of the delete button (including comments). Hope this helps :)

function removeSampleRow(id) {
    /***We get the table object based on given id ***/
    var objTable = document.getElementById(id);

    /*** Get the current row length ***/
    var iRow = objTable.rows.length;

    /*** Initial row counter ***/
    var counter = 0;

    /*** Performing a loop inside the table ***/
    if (objTable.rows.length > 1) {
        for (var i = 0; i < objTable.rows.length; i++) {

             /*** Get checkbox object ***/
            var chk = objTable.rows[i].cells[0].childNodes[0];
            if (chk.checked) {
                /*** if checked we del ***/
                objTable.deleteRow(i);
                iRow--;
                i--;
                counter = counter + 1;
            }
        }

        /*** Alert user if there is now row is selected to be deleted ***/
        if (counter == 0) {
            alert("Please select the row that you want to delete.");
        }
    }else{
        /*** Alert user if there are no rows being added ***/
        alert("There are no rows being added");
    }
}
+2
source

More articles:


All Articles