javascript - giving buttons in an array an own ID -

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I need help for a project doing for school, we need to make a booking system for a cinema chairs I created an array to create but how can I give each button my identity?

This is my code: 

  function chair () {for (i = 1; i & lt; = 10; i = i + 1) {if (i & Gt; 3 & amp; amp; amp; & amp; amp; & amp; amp; amp; amp; & amp; amp; amp; amp; amp; amp; amp;; & amp;; 8) {document.write ("& gt; Button & gt; Button & lt; / button & gt;"); } Other {document.write ("& lt; Button & gt; Hi & lt; / button & gt;");  
  
 
 
 Good, you can do this:  
  Document.write ("& lt; Button ID = BTn +" + i + "& gt; Button & lt; / button & gt;");  
 
 
 Side notes: 
 
     
  1.  
     You & nbsp; & Amp; Mdash; Declare your  i  variable. 
     
    2.  
  2.  
     In addition to the reason for doing something else, we start with  0  in the programming  1 : 
     
     For  (i = 0; i & lt; 10; i = i + 1)  
     
     you don '
     
    3.  
  3.  
      i = i + 1  can be written  ++ i  ("increment  i "):   (i = 0; i <10; ++ i)  
 
 You do not have to do it again, but this (or his cousin  i ++ ) will be more common than  i = i + 1 . 
  
  •  
      document.write  is fine for small square work and so, but just FWIW, you probably do not want to use it in the real world Use instead: 
     
      var btn = document.createElement ("button"); BT.N.ID = "BTN" + Eye; Document.body.appendChild (btn);  
     
    •   
     HH, as you're learning ...

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