search functionality in jquery

1<input id="search-date1" class="pull-right" value="" placeholder="Search Material" type="text"/>
2  $('#search-date1').keyup(function(){
3  var value = this.value.toLowerCase();
4  $('.modal_iterator_row').each(function(){
5    var id = $(this).text().toLowerCase();
6    $(this).toggle(id.indexOf(value) !== -1);
7  })
8});