Match Word using indexOf

HTML

<div>
rankings
</div>

JavaScript

//indexOf is case sensitive, change text to see it return false
//read more here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf
word = 'ra';

/* optional 
if ( $('div').text().indexOf(word) == true ) {
*/
if ( $('div').text().indexOf(word) !== -1 ) {
	alert('true');
} else {
	alert('false');
}