Javascript example

HTML

<div class="play__search">
										<button type="submit" role="button" class="play__search-btn"></button>
										<input type="text" id="asd" class="form-control form-control_unbordered play__search-control" onkeyup="searchTeam(this.value.toUpperCase())" placeholder="Search specific teams e.g. “Liverpool” ">	
									</div>
									<div class="row">
										<div class="col-sm-6">
											<div class="play-team">
												<div class="play-team__title" data-toggle="collapse" data-target="#team-1">New York Rangers</div>
												<ul class="play-team__list collapse play-team__collapse" id="team-1">
													<li class="play-team__item">
														<input class="radio-styled" type="radio" name="players" id="player-1">					
														<label for="player-1" class="play-team__name">Pavel Buchnevich</label>		
													</li>
													<li class="play-team__item">
														<input class="radio-styled" type="radio" name="players" id="player-2">					
														<label for="player-2" class="play-team__name">Jesper Fast</label>		
													</li>	
													<li class="play-team__item">
														<input class="radio-styled" type="radio" name="players" id="player-3">					
														<label for="player-3" class="play-team__name">Tanner Glass</label>		
													</li>	
													<li class="play-team__item">
														<input class="radio-styled" type="radio" name="players" id="player-4">					
														<label for="player-4" class="play-team__name">Michael Grabner</label>		
													</li>	
													<li class="play-team__item">
														<input class="radio-styled" type="radio" name="players" id="player-5">					
														<label for="player-5" class="play-team__name">Brandon Pirri</label>		
													</li>
													<li class="play-team__item">
														<input class="radio-styled" type="radio" name="players" id="player-6">					
														<label for="player-6" class="play-team__name">Jimmy...

JavaScript

var query, isMatch, labels = document.querySelectorAll('.play-team__list label');
function searchTeam(query) {
  labels.forEach(label=>{
    isMatch = label.textContent.toUpperCase().indexOf(query) !== -1
    label.closest('li').style.display = isMatch ? '' : 'none'
  })
}