javascript - Trying to switch 0 for 1 in the end of the function but it doesnt work -

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i having problem witht code.

in end of function trying switch 1 0 or 0 1;

this button should after each click change words hello or stop clicking me;

big in advance

function mediadropdown() {     var hello="hello";     var stopclicking="stop clicking me";      var notclicked=1;          if(notclicked < 1)         {             document.getelementbyid("mediaarea").innerhtml=hello;          }         if(notclicked > 0)         {             document.getelementbyid("mediaarea").innerhtml=stopclicking;          }          changepolarity(); }  function changepolarity() {     if(notclicked<1)         {             notclicked=1;         }     if(notclicked>0)         {             notclicked=0;         } }

the notclicked variable non-persistent; every time run mediadropdown function being redefined , set 1 see text "stop clicking".

move outside of function retains value.

var notclicked=1;  function mediadropdown() {     var hello="hello";     var stopclicking="stop clicking me";

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