I will explain. There are many types of counting buttons. I`m thinking good these three types of counting buttons on this webpage.
  First is, when you click, the button is counting and saving the 1.
  Second is, when you first select a quantity between -100 and +100 and then click the submit button, after the saver computer will add and divide to the previous data and save, and also will saving the counting button. I think that adding and dividing by 2 is good.
  Third is, first you select from -10 to +10 click the picture, and click the send button, after the saver computer will add and divide this number to the past date, and save the count as well.
  It`s difficult for me to make manuals for the computer program of HTML, PHP and JavaScript, so I`m improving little by little.

 Now, I`ll talk you the computer program HTML, PHP, and JavaScript for the "counting button".

 Use the que.jp (https://www.inetd.co.jp/) server computer, to publish this web page. Not using any other server computer. Difficult a judging the range, so publish the everything for this webpage.

 (1) About "index.php": When click, a new tab will open the "index.php" program on this web page with "index.txt". If the characters are not good, right-click in "Google chrome", left-click "Text Encoding", and left-click "Unicode (UTF-8)" to change to good characters. Please in Windows and Google Chrome, if tab page opened a web page on good characters, 1 Right-click: Page center, 2 Left-click: "Save as...", 3 Write: File name: "index.php", Click: Save as type: "All Files(*.*)".

 (2) About "menooneoneone.txt". Right-click the Windows display, left-click "New", left-click "Text Document", appear on the display, write "0" inside, write the name as "menooneoneone.txt", overwrite save (s ) please..

 (3) About "menothreeoneone.txt". Right-click the Windows display, left-click "New", left-click "Text Document", appear on the display, write "0" inside, write the name as "menothreeoneone.txt", overwrite save (s ) please..

 (4) About "menothreethreeone.txt". Right-click the Windows display, left-click "New", left-click "Text Document", appear on the display, write "0" inside, write the name as "menothreethreeone.txt", overwrite save (s ) please..

 (5) About "menofiveoneone.txt". Right-click the Windows display, left-click "New", left-click "Text Document", appear on the display, write "0" inside, write the name as "menofiveoneone.txt", overwrite save (s ) please..

 (6) About "menofivethreeone.txt". Right-click the Windows display, left-click "New", left-click "Text Document", appear on the display, write "0" inside, write the name as "menofivethreeone.txt", overwrite save (s ) please..

 (7) About "MCB-jpg-01-eng.jpg": Please in Windows and Google Chrome. Click is open "MCB-jpg-01-eng.jpg" in a new tab. Right-click the mouse on the picture, Left-click "Save image as ...", Write: File name (N): "MCB-jpg-01-eng.jpg", Selection: file type (T) "all files (*.*)", Left-click on "Save (S)".

 (8) About "MCB-png-01-eng.png": Please in Windows and Google Chrome. Click is open "MCB-png-01-eng.png" in a new tab. Right-click the mouse on the picture, Left-click "Save image as ...", Write: File name (N): "MCB-png-01-eng.png", Selection: file type (T) "all files (*.*)", Left-click on "Save (S)".

 (9) Do know “FFFTP”? Operating it by mistake.