javascript - How to change permanently an external file.txt? -

i change file.txt on click. example, wrote this:

html:

<script type="text/javascript" src="file.txt"></script> 

jquery:

 var counter = config.rans;  var counter1 = config.bans;  $('.redanswer').one('click', function(){     var xhr = new xmlhttprequest();     xhr.open('put','file.txt', true);     xhr.setrequestheader('content-type','text/javascript; charset=utf-8');     xhr.send( 'var config={"rans":' + ++counter + ',"bans":' + counter1 + '};' );     $( '.rtotal' ).text( counter );     $( '.btotal' ).text( counter1 ); });  $('.blueanswer').one('click', function(){     var xhr = new xmlhttprequest();     xhr.open('put','file.txt', true);     xhr.setrequestheader('content-type','text/javascript; charset=utf-8');     xhr.send( 'var config={"rans":' + counter + ',"bans":' + ++counter1 + '};' );     $( '.btotal' ).text( counter1 );     $( '.rtotal' ).text( counter ); }); 

file.txt:

var config={"rans":10,"bans":20}; 

with code when click, example, redanswer shown number 11 because it's rans(10) + 1. if reload page , click again on redanswer shown number 11 because file.txt isn't been edited. add piece of code that, on click on redanswer, can edit file.txt var config={"rans":11,"bans":20}; //10+1.

i hope understand. thank much.

sadly not possible. javascript not have read/write capabilities.

i suggest creating simple post or php api able write files.