React.js, wait for setState to finish before triggering a function?

Question

Here\'s my situation:

• on this.handleFormSubmit() I am executing this.setState()
• inside this.handleFormSubmit(), I am calling this.findRoutes(); - whic

Answer 1

setState takes new state and optional callback function which is called after the state has been updated.

this.setState(
  {newState: 'whatever'},
  () => {/*do something after the state has been updated*/}
)