在React Components中挂载转换DOM的外部脚本？

Question

Needing a solution to a problem that I have asked in many ways without resolve.

I have external scripts from TripAdvisor that are being mounted in a component as componentDidMount . Also shouldComponentUpdate() as false to avoid future eventListeners also mounted by componentDidMount in the layouts/index.js from affecting the TripAdvisor content to disappear due to re-render of the DOM.

componentDidMount () {
    const tripadvisorLeft = document.createElement("script");
    tripadvisorLeft.src = "https://www.jscache.com/wejs?wtype=selfserveprop&uniq=789&locationId=10467767&lang=en_AU&rating=true&nreviews=0&writereviewlink=true&popIdx=true&iswide=true&border=false&display_version=2";
    document.body.appendChild(tripadvisorLeft);

    const tripadvisorRight = document.createElement("script");
    tripadvisorRight.src = "https://www.jscache.com/wejs?wtype=selfserveprop&uniq=998&locationId=10467767&lang=en_AU&rating=false&nreviews=4&writereviewlink=false&popIdx=false&iswide=true&border=false&display_version=2";
    document.body.appendChild(tripadvisorRight);
}

shouldComponentUpdate() {
    return false;
}

The problem is that when using Link by either react-route or gatsby-link to and from the page that contains the component the content from TripAdvisor is not rendered.

If I refresh the browser on the page - the content is available. See here - example

How can I unmount , forceUpdate or any other solution to getting these scripts re-render on route change ?

Full source code can be found here .

Answer 1

It appears that the TripAdvisor script is creating a function called injectselfserveprop*** . (where *** are random numbers).

This function is responsible to display the HTML code of the TripAdvisor widget.

However, for obscure reason this function is not called when you reach the Component with Link .

This is one solution for your issue, and might not be the best:

1) Define your script tags in src/layouts/index.js

Because the TripAdvisor ' script creates these functions, we have to define the scripts before rendering the TripAdvisor component.

<Helmet>
  // ...
  <script src={`https://www.jscache.com/wejs?wtype=selfserveprop&uniq=789&locationId=10467767&lang=en_AU&rating=true&nreviews=0&writereviewlink=true&popIdx=true&iswide=true&border=false&display_version=2`}/>
  <script src={`https://www.jscache.com/wejs?wtype=selfserveprop&uniq=998&locationId=10467767&lang=en_AU&rating=false&nreviews=4&writereviewlink=false&popIdx=false&iswide=true&border=false&display_version=2`}/>
</Helmet>

2) call the injectselfserveprop functions on TripAdvisor componentDidMount()

componentDidMount() {
  // find any function that begins with 'injectselfserveprop'
  // and execute it.
  Object.keys(window).forEach((key) => {
    if (key.match(/^injectselfserveprop[0-9]+$/)) {
      window[key]();
    }
  });
}

I have tried this and it works for me.