Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript React Components Stateful Components and Lifecycle Methods Prevent Memory Leaks with componentWillUnmount()

disheng wang
disheng wang
5,422 Points

Question about the arguments passing in to the setInterval method

From the componeDidMount life cycle , code below:

  componentDidMount() {
    this.intervalID = setInterval(() => this.tick(), 100);
    console.log(this);
  }

here we pass ()=>this.tick() to the setInterval method. However, I am a bit confuse what is the different between we pass this.tick instead of () => this.tick()? i think they doing the same thing right? or is it just if we use arrow function calling the this.tick so I can pass the argument to the tick method? thanks