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You can set a default renderer for a table using the _all target of the columnDefs.targets option. Allan

have been using the columnDefs.targets param wrong. Setting 1

Details about the targets option can be found in the columnDefs.targets documentation. Allan

a unique classname Use columnDefs.targets and provide that unique

//can somebody explain me what this function is doing The documentation covers this. //what this line means See columnDefs.targets. Allan

It typically does, although you can use the columnDefs.targets option as an array and target multiple columns with it (or a string that will target columns with a common class). Allan

difference between columns.render and columnDefs.render... columns.render says: The data

You are using aoColumnDefs without a targets option. See columnDefs.targets. Allan

aTargets should be an array of the column numbers you want the definition to apply to Actually the columnDefs.targets can be a string as well to target columns with that class, which it looks like what @xtremer360 is doing. Allan

Use the columnDefs.targets option to apply it to a specific column, or set of columns. Allan