xmlhttprequest - Javascript variable doesn't maintain its value outside of inner function -


this question has answer here:

i'm trying write function iterate through api's database using xmlhttprequest()'s. once response value , add 'info' div in html, want append value line. however, when console.log(line), prints out nothing, had instantiated in function before loop. here's code:

var line = ''; document.getelementbyid('info').innerhtml = ''; var xhr = []; (i = 1; < 11; i++){     (function (i){         xhr[i] = new xmlhttprequest();         url = "http://pokeapi.co/api/v2/item-category/" + i;         xhr[i].open("get", url, true);         xhr[i].onreadystatechange = function () {             if (xhr[i].readystate == 4 && xhr[i].status == 200) {                 var response = json.parse(xhr[i].responsetext);                 document.getelementbyid('info').innerhtml += response.name + '<br>';                 line += response;             }         }         xhr[i].send();     })(i); } console.log(line);


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