Add project files.

wwwroot/js/site.js

@@ -0,0 +1,53 @@
+let saveContent = function ($textarea) {
+    $textarea = $textarea || $('textarea');
+
+    var content = $textarea.val();
+
+    $.ajax('/api/save', {
+        data: content,
+        contentType: 'text/plain',
+        type: 'POST'
+    }).done(function (data) {
+
+        // saved!
+
+    }).fail(function () {
+        alert('Could not connect to server. Check your internet connection and try again.');
+    });
+};
+
+$(function () {
+
+    // bind on blur event
+    $('textarea').on('blur', function () {
+        saveContent($(this));
+    });
+
+    // 20 second interval
+    setInterval(saveContent, 20000);
+
+    //onbeforeunload = saveContent();
+
+    // support tab key in textarea
+    $('textarea').keydown(function (e) {
+        if (e.keyCode === 9) { // tab was pressed
+            // get caret position/selection
+            var start = this.selectionStart;
+            end = this.selectionEnd;
+
+            var $this = $(this);
+
+            // set textarea value to: text before caret + tab + text after caret
+            $this.val($this.val().substring(0, start)
+                + '\t'
+                + $this.val().substring(end));
+
+            // put caret at right position again
+            this.selectionStart = this.selectionEnd = start + 1;
+
+            // prevent the focus lose
+            return false;
+        }
+    });
+
+});