I dont know what did I do

.gitignore

@@ -0,0 +1,2 @@
+\.vscode
+\.vscode/*

index.php

@@ -79,7 +79,7 @@
 	background-color:#2c2835;
 	color:white;">
 <div class="ts container">
-<img class="ts tiny right floated image" src="img/cube.png"></img>
+<img class="ts tiny right floated image" src="img/cube.png" />
 </div>
 <div align="left" class="ts container">
 <br>
@@ -91,30 +91,23 @@ CopyRight IMUS Laboratory 2018, All right reserved.
 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
 <script type="text/javascript" src="jquery.qrcode.min.js"></script>
 <script>
-jQuery(function(){
-	jQuery('#output').qrcode("Hello World");
+$(function(){
+	$('#output').qrcode("Hello World");
 })
 
 function senddata(){
 	textarea = $('#textholder').val();
-    $.ajax({
-        type: "POST",
+    $.post({
         url: "StickMemo.php",
-        data:{ content: textarea }, 
+        data:{ content: textarea },
         success: function(data){
-            //alert(data);
 			$("#output").empty();
 			jQuery('#output').qrcode("http://imuslab.com/qs/display.php?id=" + data);
 			$("#sid").html(data);
         }
     })
-	
 }
 
-$(document).ready(function(){
-	
-});
-
 function rx(id){
 	top.location.href = "http://imuslab.com/qs/display.php?id=" + id;
 }