Update settings.html

settings.html

@@ -49,7 +49,7 @@ input[type="number"] {
    <label for="ph_on_set">Новое : </label>
    <input type="number"  id="ph_on_set" value="2.5" min="0.1" max="20" step="0.01">
 </form>
-
+<button id="ph_on_set_but" type="button" class="btn btn-primary">Записать</button>
 
   
  <!-- Уровень - EC -->   
@@ -201,7 +201,14 @@ input[type="number"] {
     xhr.send();
 });
   </script>
-
+  <script>
+  document.getElementById("ph_on_set_but").addEventListener("click", function() {
+    var pH_onValue = document.getElementById("ph_on_set").value;
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", "/ph_on_set?value=" + pH_onValue, true);
+    xhr.send();
+});
+  </script>
   <script>
   document.getElementById("ec_set_but").addEventListener("click", function() {
     var ecValue = document.getElementById("ec_set").value;