Add custom variable to jquery datatables and read in search filter

Question

I am using the jQuery DataTables plugin. I am trying to assign a parameter to my table, and use that parameter later in a custom search. I however cant find out how to store and get that parameter, and in my custom search i dont know how to get the table object. Here is my code to give a more clear idea of what i am trying to do:

jQuery.fn.dataTable.ext.search.push(
    function( settings, data, dataIndex ) {
        var myParam = ....;
        console.log('i said: '+ myParam)
       return true;
    }
);

var table = jQuery('#myTable').DataTable();
table.myParam = 'hello';
table.draw();

Gyrocode.com · Accepted Answer · 2016-03-04 15:11:07Z

4

Use global variable:

var myParam = '';

jQuery.fn.dataTable.ext.search.push(
    function( settings, data, dataIndex ) {   
       console.log('i said: '+ myParam)
       return true;
    }
);

var table = jQuery('#myTable').DataTable();
myParam = 'hello';
table.draw();

Use data- property:

jQuery.fn.dataTable.ext.search.push(
    function( settings, data, dataIndex ) {
       var table = new jQuery.fn.dataTable.Api( settings ); 
       var myParam = jQuery(table.table().node()).data('myParam');

       console.log('i said: '+ myParam)
       return true;
    }
);

var table = jQuery('#myTable').DataTable();
jQuery(table.table().node()).data('myParam', 'hello');
table.draw();

edited Mar 4, 2016 at 15:11

answered Mar 4, 2016 at 15:00

Gyrocode.com

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2 Comments

user4493177 Over a year ago

Thanks for your answer. The data() seems a good idea, however it means that for each row check a new object will be created. Do you know if this has any impact on performance and on how to fix that? I am trying to avoid globals.

Gyrocode.com Over a year ago

@user4493177, obviously with data- property method there are several extra functions that will be called in the loop. I'm not sure how that will impact performance, that will depend on the table size.

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