Node.js, For loop -

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I'm using to loop on server.js but it is not working and error Reasons 

  var myEasyrtcApp = function (err, appObj) {for (i = 0; i <10; i ++) {appObj.createRoom ("room" + i, null, Function (err, roomObj) {}); }; }

Recommend how many times you can use app ozes to open different coverage rooms. How to use for loop to make credit call


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