Passing both the event and an argument to a handler in React

Question

In React I have created a button, like this:

<Link size="button" onClick={this._handleShareClick.bind(this, this.props.shareID)} href={this.props.URL}>{shareText}</Link>

What I want to do is pass the share ID, but also have access to the regular event object, to allow me to use e.preventDefault();

When I pass to the handler:

_handleShareClick = (e, shareID) => {
    console.log(shareID);
    e.preventDefault();
}

The shareID doesn't console log, and I also get the following error in my console:

Uncaught TypeError: Cannot read property 'preventDefault' of undefined

Is there a reason I can't access both of these things, or is there another approach that I am missing?

You are binding the first parameter to this.props.shareID, so you probably want _handleShareClick = (shareID, e) => .... — Felix Kling
– Felix Kling, Commented Nov 3, 2015 at 17:43
Why don't you access this.props.shareID directly in _handleShareClick? — Felix Kling
– Felix Kling, Commented Nov 3, 2015 at 19:40

Felix Kling · Accepted Answer · 2015-11-03 19:39:28Z

2

You should use:

onClick={(e) => (e.preventDefault(), this._handleShareClick(this.props.shareID))

edited Nov 3, 2015 at 19:39

Felix Kling

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answered Nov 3, 2015 at 18:35

Errorpro

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Comments

ben · Accepted Answer · 2019-03-26 10:44:24Z

0

If u need to pass custom parameters, then u can simply pass the parameters to the bind call. The SyntheticEvent will be passed as the second parameter to the handler.

handleClick(param, e) {
  console.log('Parameter', param);
  console.log('Event', e);
}

render() {
  <button onClick={this.handleClick.bind(this, 'Parameter')}></button>
}

answered Mar 26, 2019 at 10:44

ben

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