What is a callback function tied to a specific URL?

I need to implement a functionality in my web application where users can click on a link within a datatable, which will then load a new table on a separate page. This new table should only display rows that have the same id as the row that was clicked on in the previous table/page.

The current code I have is not working as expected. I suspect this is because the data from the first table is not getting saved before the new page is loaded, resulting in the loss of necessary information. Is there a way to set up a callback so that my JavaScript function runs before the link opens the new page? Or maybe my approach is completely off?

Below is the part of the code where the user clicks on a link within the table:

"data": "ErrorCount",
"render": function (data, type, row) {
         if (type === 'display') {
         return (data === 0)
         ? data = '<span data-search="0"></span>'
         : data = '<a id="errors" href="http://localhost/WTM/LogError/Index" type="hidden" class="fas fa-exclamation-triangle" style="color:red"></a>';
         }
         return data;
   },

This is the JavaScript function for filtering:

var clickError = document.getElementById("errors")
var xTable = $('#TABLE_ONE').DataTable();
var yTable = $('#TABLE_TWO').DataTable();

$('clickError').click(function () {
                        
     var rowData = xTable.row(this).data();                        
                        
     yTable.columns(0).search(rowData.TaskSchedulerLogUid).draw();
});

Answer №1

Several problems need to be addressed:

  1. Avoid using repeated IDs in a webpage, opt for classes

  2. The selector $('clickError') is not valid

  3. The elements being targeted are dynamically generated and may not all be present at the time of code execution. Consider using event delegation.

  4. The target is not the <a> element

Solutions:

HTML

'<a  ̶i̶d̶=̶"̶e̶r̶r̶o̶r̶s̶"̶  class="errors"...

JS

$('#tableID').on('click', 'a.errors', function(e){
    e.preventDefault();
    var row = $(this).closest('tr')[0]; 
    var rowData = xTable.row(row).data();
    yTable.columns(0).search(rowData.TaskSchedulerLogUid).draw();

})

Answer №2

If you're looking for a different approach, I have found an alternative method.

To start, I included the search query or row ID in the URL of the new page I wanted to navigate to in this way:

<a href="http://[url]' + row.[column name] + '"></a>

Next, I extracted the search query or ID from the URL and utilized it to search the table on the new page by following these steps:

var queryString = window.location.search;
queryString = queryString.substring(4);
if (queryString == null) {
throw "Error: id is null"
} else {
WtmDetails.vars.secondaryTable.columns(0).search(queryString).draw();
}

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