Here is how to find the HTML element by the text it contains.
[geshifilter-code]
<body>
<div>John Resig</div>
<div>George Martin</div>
<div>Malcom John Sinclair</div>
<div>J. Ohn</div>
<script>
$( "div:contains('John')" ).css( "text-decoration", "underline" );
</script>
</body>
[/geshifilter-code]
The above code will find the HTML element i.e. div in our case, with text John, and add underline to it.