How to get the corresponding th of a td using jQuery


I have a table like this:
<th>Header 1</th>
<th>Header 2</th>
<th>Header 3</th>

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i need to get the corresponding th of the td on click and send an alert with the th name. For example on click in 345 alert Header 1, click on 3857 alert Header 3.

Using jQuery, any idea?
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Following code should do the trick

$("table tr td").click(function(){
    var selectedCellIndex = this.cellIndex;
    var correspondingHeader = $("table tr th")[selectedCellIndex];
    var correspondingHeaderText = $(correspondingHeader).text();

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In action -

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