React: removing element from array in component state

Question

I am trying to find the best way to remove an element from an array in the state of a component. Since I should not modify the

this.state

variable directly, is there a better way (more concise) to remove an element from an array than what I have here?:

  onRemovePerson: function(index) {

    var newData = this.state.data.slice(); //copy array

    newData.splice(index, 1); //remove element

    this.setState({data: newData}); //update state

  },

Thank you.

Answer 1

You could use the update() immutability helper from React.addons, which effectively does the same thing under the hood, but what you're doing is fine.

this.setState({
  data: update(this.state.data, {$splice: [[index, 1]]})
})

React: removing element from array in component state

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