Conceal Child Component Element Upon onClick Event with ReactJS

As someone new to React, I am learning by coding. Currently, I have component A which includes a select element with menu items (all material UI). Is it possible for the whole component to disappear once a user chooses an option from the dropdown? Essentially, I want the select element to no longer be visible on the page after a selection has been made.

I apologize if there are any errors in my English, as it is not my first language.

Any suggestions or help would be greatly appreciated.

Component A code snippet:

const A: React.FC<AProps> = (props) => {
  const handleChange = (e: React.ChangeEvent<{ value: unknown }>) => {
    const site = e.target.value as string;
    dispatch(changeActiveSite(site));
    if (site) {
      dispatch(getAnalysers(site));
    } else {
      dispatch(clearSiteData(site));
    }
  };

  const sites = [
    {
      ident: "",
      name: "None",
    },
  ].concat(sitess);


  return (
    <React.Fragment>
      <FormControl className={classes.formControl}>
        <InputLabel id="site-select-input-label">site</InputLabel>
        <Select
          id="site-select"
          value={currentSiteId}
          labelId="site-select-input-label"
          onChange={(e) => handleChange(e)}
        >
          {sites.map((site) => {
            return (
              <MenuItem key={site.ident} value={site.ident}>
                {site.name}
              </MenuItem>
            );
          })}
        </Select>
      </FormControl>
    </React.Fragment>
  );
};

This component exists within Component B, indicated like this:

<div > <A site={site} /> </div>

Answer №1

Consider the scenario where you have a file named MenuItem.js, specifically focusing on its render() and constructor(). To make it able to toggle between being hidden or visible, utilize a state attribute called hidden to manage this functionality. Your render method may look something like this...

constructor(props) {
    super(props);
    this.state = {
        'hidden':false,
    };
}

render () {
    if(this.state.hidden) {
        return '';
    }
    
    return (
        <div
            onClick={(e) => this.handleOnClick(e)}
        >
            {this.props.value}
        </div>
    );
}

In addition, I included a handleOnClick(e) handler above for handling the click event. This function simply executes this.setState({'hidden':true}), like so...

handleOnClick(e) {
    this.setState({'hidden':true});
}

If you are looking for further guidance, there is an answer available on a related query at: How to set one component's state from another component in React

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