Getting undefined from jquery find() in my example

Getting undefined from jquery find() in my example

I have an HTML page like this :

I have an HTML page like this :

I have put an event on input.global_filter using jquery as follows:

$('input.global_filter').on('keyup click', function() {
<script src=""></script>

<!-- Table3--> <table class="example" data-column="3"> ...... </table>

<table> <tbody> <tr> <td> <input type="text" class="global_filter"> </td> </tr> </tbody> </table>

<!-- Table1--> <table class="example" data-column="1"> ...... </table>

<!-- Table2--> <table class="example" data-column="2"> ...... </table>

This results in undefined. It should give the result TABLE. Where am I wrong ?

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