<div> Have {_.filter(this.state.todos, {done:true}).length} todos done, and {_.filter(this.state.todos, {done:false}).length} not done <br/> <div rt-repeat="todo in this.state.todos" key="{todo.key}"> <button onClick="()=>this.remove(todo)">x</button> <input type="checkbox" checked="{todo.done}" onChange="()=>this.toggleChecked(todoIndex)"/> <span style="text-decoration: {todo.done ? 'line-through': 'none'}">{todo.value}</span> </div> <input key="myinput" type="text" onKeyDown="(e) => if (e.keyCode == 13) { e.preventDefault(); this.add(); }" valueLink="{this.linkState('edited')}"/> <button onClick="()=>this.add()">Add</button><br/> <button onClick="()=>this.clearDone()">Clear done</button> </div>