script.js

//This function is for initailizing the markdown editor
function start(){
    var md=localStorage.getItem("md");
    if(md!=null){
        document.getElementById('textarea').innerHTML=md;
        render();
    }
    else{
        var str="# MarkDown Editor\n\n> GitHub Flavored Markdown Editor\n# How to Use\n- Clear the all codes on the left panel\n- Write some markdown codes there\n- Enjoy!\n- Follow [Varshith V Hegde](https://github.com/Varshithvhegde)";
        document.getElementById('textarea').innerHTML=str;
        render();
    }
}
var i=0;

// This Function is to convert the markdown to html
function convertToHTML(){
  if(i==0){
    i=1;
    document.getElementById("textarea").readOnly = true;
    var md=localStorage.getItem("md");
    document.getElementById("converttohtml").innerHTML="Convert to Markdown";
    var converter = new Remarkable();

//   var converter = new showdown.Converter();
//   var html = converter.makeHtml(md);

    var html = converter.render(md);
    document.getElementById('textarea').value=html;
  }
  else{
    i=0;
    document.getElementById("textarea").readOnly = false;
    document.getElementById("converttohtml").innerHTML="Convert to HTML";
    var md=localStorage.getItem("md");
    document.getElementById('textarea').value=md;
  } 
}


// This function is to get file from the user
function getFile(id){
  var fileInput =document.getElementById("file-upload");
  var file = document.getElementById("file-upload").files[0];
  var filePath = fileInput.value;
         
  var allowedExtensions =/(\.md)$/i;
    
  if (!allowedExtensions.exec(filePath)) {
      alert('Invalid file type\nChoose a Markdown file');
      fileInput.value = '';
      return false;
  }
  else{
  var reader = new FileReader();
    reader.readAsText(file);
    reader.onload = function() {
      var md = reader.result;
      document.getElementById("textarea").value=md;
      render();
    };
    reader.onerror = function() {
    console.log(reader.error);
    }
  }
}