3

This is how I use dynamic setState but what if I want to prefix the state name?

handleChange(field, value) {
    this.setState({ [field]: value });
}

<input
  onChange={e => this.handleChange('fname', e.target.value)}
/>
<input
  onChange={e => this.handleChange('lname', e.target.value)}
/>

Like I want to produce this.state.my_fname and this.state.my_lname.

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1
  • in handleChange first param field is a string. you can concat like { ['my' + field]: value } Commented Jun 19, 2018 at 1:47

1 Answer 1

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6

Does this achieve what you're after?

handleChange(field, value) {
    this.setState({ [`my_${field}`]: value });
}
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