Check if row contains string
<p>I'm writing a chrome extension to remove rows from a table that contain certain text. Right now this work, but the text has to be exact. I want to make it so if the text contains a string (and make it non case sensitive). How about would I go about doing so? i.e I want to search for "return" and if it's "ReTurn Tracker" it will remove it.</p>

<pre><code>function removeRows(tableID, searchString){
    $("#"+ tableID +" tr td:contains('" + searchString + "')").each(function() {
        if ($(this).text() == searchString) {
            $(this).parent().remove();
        }
    });
}
</code></pre>