hi 3bight word in textarea javascript

1$(function(){
2  $("#search").click(function(){
3    var area   = $('#test');
4    var findWord = "rhoncus";
5    var index = area.val().indexOf(findWord);
6    area.focus().prop({'selectionStart': index, 'selectionEnd': index+findWord.length})          
7  })
8})
9