JSFiddle - React, Tailwind, and code Playground
HTML
<div class="searchable">foo</div>
<div class="searchable">bar</div>
<div class="searchable">foobar</div>
<div class="searchable">baz</div>
<br>
<div id="output"></div>
JavaScript
function search(term) {
return $('.searchable:contains("'+term+'")').map(function() {
return $(this).text();
}).get().join(', ');
}
$('#output').append('Empty string: ' + search('') +
'<br>foo: ' + search('foo'));