javascript - How do I remove a selected option dynamically -


I am trying to find out the junkie deletion of an option after selecting the user. 

  & lt; Select ID = "Field 4" name = "ProductCancingAutomom" style = "width: 30%" & gt; & Lt; Option value = "" & gt; -Please select - & lt; / Options & gt; & Lt; Option value = "1" & gt; 1 & lt; / Options & gt; & Lt; Option value = "2" & gt; 2 & lt; / Options & gt; & Lt; Option value = "3" & gt; 3 & lt; / Options & gt; & Lt; Option value = "4" & gt; 4 & lt; / Options & gt; & Lt; Option value = "5" & gt; 5 & ​​lt; / Options & gt; & Lt; / Select & gt; & Lt; Select ID = "Field 5" name = "ProductCancingTworks" style = "width: 30%" & gt; & Lt; Option value = "" & gt; -Please select - & lt; / Options & gt; & Lt; Option value = "1" & gt; 1 & lt; / Options & gt; & Lt; Option value = "2" & gt; 2 & lt; / Options & gt; & Lt; Option value = "3" & gt; 3 & lt; / Options & gt; & Lt; Option value = "4" & gt; 4 & lt; / Options & gt; & Lt; Option value = "5" & gt; 5 & ​​lt; / Options & gt; & Lt; / Select & gt; & Lt; Select ID = "Field 6" name = "ProductCancingEkker" style = "width: 30%" & gt; & Lt; Option value = "" & gt; -Please select - & lt; / Options & gt; & Lt; Option value = "1" & gt; 1 & lt; / Options & gt; & Lt; Option value = "2" & gt; 2 & lt; / Options & gt; & Lt; Option value = "3" & gt; 3 & lt; / Options & gt; & Lt; Option value = "4" & gt; 4 & lt; / Options & gt; & Lt; Option value = "5" & gt; 5 & ​​lt; / Options & gt; & Lt; / Select & gt;

Therefore, after selecting "1" from "Field 4", "1" field will not appear in 5-etc.

I tried: 

  $ document.getElementById ("field4"). AddEventListener ("Change", function (select) {if (this.value! = "") {Var select2 = document.getElementById ("field5"); (Var i = 0; i    
 
 
 Use  .remove ()  on  options < / Code> 
   select2.remove (i); // i is the value index of the index that you want to delete

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