SentimentAnalysis_JavaScript/ngram.html at master · dev-vibhor/SentimentAnalysis_JavaScript · GitHub

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<html>
<head>
<input type="file" id="fileinput" />
<script type="text/javascript">
function readSingleFile(evt) {
var f = evt.target.files[0];
if (f) {
//alert(" file1");
      var r = new FileReader();
      r.onload = function(e) {
          var contents = e.target.result;
          var ct = r.result.toLowerCase();
			var words = ct.split(' ');
			//alert("file2");
			var feature = prompt('Enter text here');
			//alert(inputVal);
			var arr1=[];
		for(i=0;i<words.length;i++)
       {
		   if(words[i]==feature)
		  { if(words[i+1]!=' ' && words[i+2]!=' '){
	       arr1.push(words[i]+' '+words[i+1]+' '+words[i+2]);}
		   if(words[i-2]!=' ' && words[i-1]!=' '){
	       arr1.push(words[i-2]+' '+words[i-1]+' '+words[i]);}
		  }
	   }
	   len = arr1.length;


   if(arr1.length>0)
   {

  for ( n = 0; n < len; n++) {

          document.getElementById("demo").innerHTML += (n+1).toString()+')'+' '+arr1[n]+"<br>";


      }
	}
else
{
alert("No feature present as per your input");
}


			}
			r.readAsText(f);
			}

 else {
      alert("Failed to load file");
    }


	   //document.getElementById("demo").innerHTML = arr1[0];
}
document.getElementById('fileinput').addEventListener('change', readSingleFile, false);
</script>
</head>
<body>
<center><h1>Welcome to Feature extraction</h1>
<p>1) Load the file</p>
<p>2) Enter the feature that needs to extracted in promt window</p> </center>
<div id="res">
  Output
</div>
<p>Extracted feature</p>
<p id="demo">....<br></p>
</body>
</html>