How to save and edit a file using JavaScript?

Question

I want a user of my website to enter some text in a text area and when he submits the form, the text that he entered be stored in a .txt file that is present in same directo

Answer 1

You can send that particular textarea value through ajax by javascript. Then on the server side you can put a code, where you can accept the string and save it in a text file. You cant just do it with Javascript, you need a serverside code..

        //Html
    

    //javascript
    var dataVal = $('#TextArea').val();
    if(dataVal!="")
    {
    $.ajax({
                url: '/createTextFile',
                type: 'POST',
                contentType: 'application/json; charset=utf-8',
                data: dataVal,
                success: function (response) {
                    alert('Success');      
                },
                error: function (xhr) {
                    alert('Error: There was some error while posting. Please try again later.');
                }
            });
    }

    //You can server side code (C#)

    function SaveToTextFIle(text)
    {
        try
        {
            // The using statement automatically closes the stream and calls  
            // IDisposable.Dispose on the stream object. 
            using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\Users\Public\TestFolder\WriteLines2.txt", true))
            {
                file.WriteLine(text);
            }
        }
        catch(ex)
        {
            throw ex;
        }
    }