StickyNotes/stickyNotes.html at master · hugorogz/StickyNotes · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="css/main.css">

    <script type="text/javascript">

        function saveNoteData() {

            var notesArray = [];//an array to store objects with the information of each note

            //for each note content add a an object to the notesArray
            document.querySelectorAll("div > .note-content").forEach(
                function (e, i) {

                //save the class attribute of the div, the content of textarea, the creation and edition date
                var colorClass = e.parentElement.getAttribute("class");
                var content = e.value;
                var created = e.previousElementSibling.previousElementSibling.textContent;
                var edited = e.previousElementSibling.textContent;

                notesArray.push({ Index: i, Content: content, Class: colorClass, Creation: created, Edition: edited});

            });

            //stringify the array
            var jsonStr = JSON.stringify(notesArray);

            // and store it in localStorage
            localStorage.setItem("notes", jsonStr);

        }
//-----------------------------------------------------------------------------------------------------------------------------

        function addEvent(div) {//add an event to the passed element, in this case the div
            //get the textarea
            var contTextarea = div.firstChild.nextSibling.nextSibling;
            //set a keyup event to the text area
            contTextarea.onkeyup = function() {
                var lastEdition = "Last Edit: " + document.lastModified;//every time a key is up, set last edition date
                contTextarea.previousElementSibling.textContent = lastEdition;

                saveNoteData();//save the note info
            };

        }
//-----------------------------------------------------------------------------------------------------------------------------

        function addNote(className, creation, content, edition) {

            if (!className) {//if theres no class in div set it and add it a random number
                className = "color" + Math.ceil(Math.random() * 3);//math.ceil a random number between the range [0-1)
            }//zero included to 1 not included, multiplied by 3... in css we have .color1 .color2 and .color3 class selectors

            //here started to create the elements that note will contain
            var creationDate = "Created: " + document.lastModified;//creation date var
            var li = document.createElement("li");//li element that will contain the div note (notes are inside a <ul>)
            var div = document.createElement("div");//the note body
            var creat = document.createElement("p");//the p element that contains the creation date
            var lastEd = document.createElement("p");//the p element that will contain last edition date
            var cont = document.createElement("textarea");//text area where we will write
            var close = document.createElement("img");//close button
            var newNote = document.getElementById("notes");//select the ul were notes will be attached

            newNote.appendChild(li);//append a <li> to <ul>

            li.appendChild(div);//append the note div inside the <li> that we just created
            div.className = className;//add the note a className

            div.appendChild(creat);//append creation date <p>
            creat.className = "creation";//set a classname to it
            creat.insertAdjacentElement("afterend", lastEd)//insert creation date after last edition date
            creat.nextSibling.className = "edition";//set a classname to it

            div.appendChild(cont);//append the textaarea to div
            cont.className = "note-content";//set a className to it
            cont.setAttribute("placeholder", "Enter your text here...");//set a placeholder text to textares

            div.appendChild(close);//append close img to note div
            close.setAttribute("src", "images/close.png");//set src attribute

            close.onclick = function () {//add event click to the close image
                // remove the note
                newNote.removeChild(close.parentNode.parentNode);
                saveNoteData();//save the note data

            };

            addEvent(div);//add an evento to div

            // if theres not creation date, then set the creation date of the creationDate var
            if (!creation) {
                creat.textContent = creationDate;
            }
            //if theres not edition date, then set the content of lastEd to blank ""
            if (!edition) {
                creat.nextElementSibling.textContent = "";
            }


            // if a creation date is provided then set the creation date of the note
            if (creation) {
                // set the creation date in the content of the p creation date element
                div.firstElementChild.textContent = creation;
            }
            // if an edition date is provided then set the date of the note
            if (edition) {
                // set the edition date in the content of the p edition date element
                div.firstElementChild.nextElementSibling.textContent = edition;
            }

            // if a content is provided then set the content of the new note
            if (content) {
                // get the content textarea element and set its value
                div.firstElementChild.nextElementSibling.nextElementSibling.value = content;
            }

            // save the note data
            saveNoteData();
        }
//-----------------------------------------------------------------------------------------------------------------------------

        function loadNotes() {
            //get the information from localStorage, look for the "notes" item that is an array with objects witht the notes info
            var storedNotes = localStorage.getItem("notes");
            //if theres stored information in "notes"
            if (storedNotes) {
                // parse the array and store it in the notesArray var
                var notesArray = JSON.parse(storedNotes);
                count = notesArray.length;//set count to the array length

                var i;
                for (i = 0; i < count; i++) {//iterate over the array
                    var storedNotes = notesArray[i];
                    //pass the information in the object at position i to the addnewnote function
                    //so we can create new notes that will hold that information
                    addNote(storedNotes.Class, storedNotes.Creation, storedNotes.Content, storedNotes.Edition);
                }
            }

        }
//-----------------------------------------------------------------------------------------------------------------------------
        //when the page load
        window.onload = function () {
            //get Add note button (image)
            var button = document.getElementById("newNote");

            loadNotes();//load stored notes

            // set an event to the add button. On click add a new Note
            button.onclick = function () {
                addNote();
            };

        };

    </script>

</head>
<body>

    <div id="cont">
        <img id="newNote" src="images/newnote.png"/>
    </div>

    <ul id="notes"/>

</body>
</html>