find a specific text in tr td jquery using contains [duplicate]

This question already has an answer here:

• How can I detect if a selector returns null? 7 answers

This is my fiddle of finding a text in tr.

I used

var reports = $('table#reports > tbody');
var tr1 = reports.find('tr:has(td:contains("First Name"))');

to find the text but even if the text does not exist it still alerts that it exists. To check if it exist i created an if

if (tr1) {
    alert('exist');
 } else {
    alert('not');
 }

via Chebli Mohamed