modify verbs and nouns

nlp.js

var verb_style = ['<span style="color:blue;font-size:420%">',
'<span style="color:green;font-size:250%">',
'<span style="color:orange;font-size:550%">'];
$(document).ready(function(){
  $("button").on( 'click', function(){
    var original_text = $( "#original_text").val();
    var doc = nlp(original_text);
    var nouns = doc.nouns().out('array');
    var verbs = doc.verbs().out('array');
    var ignoreVerb = ['was', 'is', 'be', 'are', 'do', 'did', 'does', 'was', 'get', 'got', 'began', 'comes', 'has', 'have', 'had'];
    var ignoreNoun = ['someone', 'somewhere', 'somebody', 'anyone', 'anywhere', 'everyone', 'everywhere', 'no one', 'nowhere', 'nobody', 'all', 'any', 'more', 'most', 'none', 'some', 'such', 'both', 'few', 'many', 'others', 'another', 'anybody', 'anything', 'each', 'either', 'enough', 'everybody', 'everything', 'little', 'much', 'neither', 'nothing', 'one', 'other', 'something']
    console.log(nouns);
    console.log(verbs);
    var modified_text = original_text;
    // Filter out nouns to ignore, same as verbs
    var highNouns = nouns.filter(function (noun) {
      return ignoreNoun.indexOf(noun) === -1;
    });
    var noun_index = Math.floor(Math.random()*highNouns.length);
    console.log(noun_index);
    var noun = highNouns[noun_index];
    console.log(noun);
    
    // Modify just the first occurrence of one random noun
    modified_text = modified_text.replace(noun, '<span style="color:red;font-size:200%">'.concat(noun, "</span>"));

    //Filter out verbs to ignore
    verbs.filter(function (verb) {
      return ignoreVerb.indexOf(verb) === -1;
    // Modify 30% of the verbs
      }).forEach(function(verb) {
        if (Math.random() < 0.3) {
          var re = new RegExp('\\b'.concat(verb, '\\b'));
          var chosen_style = verb_style[Math.floor(Math.random()*3)];
        modified_text = modified_text.replace(re, chosen_style.concat('$&</span>'));
      }
    });
  $("#rendered").html(modified_text);

});
});