Remove item from array in React

Question

I have problem with removeItem function (it should remove current

that button is nested in, and item from array on this.state.list), no code currentl

Answer 1

removeItem(item) {
    const item = getItem(this.state.list, item.id) // Method to get item in list through comparison (IE: find some item with item.id), it has to return ITEM and INDEX in array
    const newlist = [].concat(list) // Clone array with concat or slice(0)
    newlist.splice(item.index, 1);
    this.setState({list: newlist});       
  }

Answer 2

  _deleteTodo(index) {
    console.log("delete " + index);
    this.state.todos.splice(index, 1);
    this.setState({
      todos: this.state.todos.filter(i => i !== index)
    });
  }

I had a problem with splice and i honestly don know why. However this method work for me and you can try it! Ps. If anybody know why splice is not working with state and index please let me know i am curious!