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HTML

CSS

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JavaScript

Babel includes JSX processing.

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Code Indentation

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HTML

              
                <div id='app'>
  <h1>Enter some text here:</h1>
  <textarea id='input' v-model='input' type="text"></textarea>
  <h1>Topics I could detect:</h1>
  <pre id='output'>{{ output() }}</pre>
</div>
              
            
!

CSS

              
                * {
  background: rgb(32,32,32);
  color: whitesmoke;
  font-family: avenir, arial;
  padding: 10px;
  border-radius: 10px;
}

#input {
  background: lightgray;
  color: black;
  width: 100%;
  font-size: medium;
}

#input:hover {
  background: darkgray;
}

#input:active {
  background: gray;
}

#output {
  background: #151515;
}
              
            
!

JS

              
                var app = new Vue({

  el: '#app',

  data: {
    input: 'Wikipedia is a multilingual, web-based, free encyclopedia based on a model of openly editable content. It is the largest and most popular general reference work on the Internet, and is one of the most popular websites by Alexa rank. It is owned and supported by the Wikimedia Foundation, a non-profit organization which operates on money it receives from donors.'
  },

  methods: {
    output: function() {
      let output = nlp(this.input).topics().slice(0, 5).out('array');
      output = ' - ' + output.join('\n - ');
      if (output == ' - ') {
        return `( I'm not the smartest, so you might need to enter more text. )`;
      }
      return output;
    }
  }

});
              
            
!
999px

Console