Issue of using setState function in ReactJS application

Asked Oct 19 '19 at 09:11

Active Oct 19 '19 at 16:43

Viewed 29 times

I am working on a Reactjs application, and want to update state using

this.setState({})

But its saying cannot read property of "setState" is undefined.

Here is my Code.

constructor(props) {
  super(props)
  this.state = {
    volume: 0
  }
  this.handleOnChange = this.handleOnChange.bind(this);

}

handleOnChange(value) {
  this.setState({
    volume: value
  })

}

Error: Uncaught TypeError: Cannot read property 'setState' of undefined.

edited Oct 19 '19 at 16:43

giuseppedeponte

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asked Oct 19 '19 at 09:11

Jagdeesh Kumar

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Share full file code. Do you `import React from 'react'` ? – Mgorunuch Oct 19 '19 at 09:16
And also if you use class syntax you need to do `class YourComponent extends React.Component` – Mgorunuch Oct 19 '19 at 09:20
Yes imported React – Jagdeesh Kumar Oct 19 '19 at 09:25
Well I found its solution and it works for me – Jagdeesh Kumar Oct 19 '19 at 09:25
I am not able to use Arrow function.. do you guys know about that? – Jagdeesh Kumar Oct 19 '19 at 09:26
Share original code with error (in your question) and we can share an answer for other people. – Mgorunuch Oct 19 '19 at 09:27
1

Possible duplicate of [React - uncaught TypeError: Cannot read property 'setState' of undefined](https://stackoverflow.com/questions/32317154/react-uncaught-typeerror-cannot-read-property-setstate-of-undefined) – Salim Djerbouh Oct 19 '19 at 09:35

Issue of using setState function in ReactJS application

0 Answers0