rows().remove() - Javascript

The rows().remove() method in JavaScript is used to remove one or more rows from a DataTable. It can be used to delete a specific row or multiple rows based on certain conditions.

Syntax

table.rows().remove([selector [, callback]]);

Where:

• table: The JQuery DataTable object
• selector: Optional. A function that returns a boolean value indicating which rows to remove
• callback: Optional. A function to be called after the rows are removed

Parameters

The remove() method can take two optional parameters, selector and callback.

Selector

The selector parameter is a function that returns a boolean value indicating whether each row should be removed from the table. If selector is not specified, all rows will be removed.

// Remove all rows which have a value of 'John' in the 'name' column
table.rows().remove(function (idx, data, node) {
    return data.name === 'John';
});

Callback

The callback parameter is a function that is called after the rows have been removed from the table.

table.rows().remove().draw(function () {
    console.log('Rows removed from the table');
});

Example

An example of how to use the rows().remove() method is shown below. In this example, a table is created and populated with data using DataTables. A button is then added to the page which, when clicked, will remove all rows from the table where the age is less than 18.

$(document).ready(function() {
    var table = $('#example').DataTable();

    $('#remove-button').on('click', function() {
        table.rows().remove(function(index, data) {
            return data.age < 18;
        }).draw();
    });
});

Conclusion

The rows().remove() method is a useful tool for deleting rows from a DataTable in JavaScript. It can be used to remove specific rows based on certain conditions or simply delete all rows from the table. The optional callback parameter also allows for further customizations after the rows have been removed.