Javascript XMLHttpRequest PHP returns "undefined"

Asked Jul 11 '18 at 09:45

Active Jul 11 '18 at 10:05

Viewed 13 times

I try to call a PHP file via XMLHttpRequest() Thats works fine. But now I want to call this function to get an array as return, but I get undefined:

function getSomethingPHP(){
  var hr = new XMLHttpRequest();
  ...
  hr.onreadystatechange = function() {
     if(hr.readyState == 4 && hr.status == 200) {
        var return_data = hr.responseText;
        var obj = JSON.parse(return_data);
        return obj["val"];  
  ...    
}

var test = getSomethingPHP();

console.log(test); // -> undefined

I removed something in XMLHttpRequest(); because this works, but I don't understand why console.log(test); callback undefined Does anyone have an idea or solution for this?

edited Jul 11 '18 at 10:05

squancy

asked Jul 11 '18 at 09:45

Korty

`getSomethingPHP` has no return statement – Quentin Jul 11 '18 at 09:50
return obj["val"]; – Korty Jul 11 '18 at 09:58
That is in the `onreadystatechange` function, not the `getSomethingPHP` function. – Quentin Jul 11 '18 at 10:00
I understand, how to return `onreadystatechange` in `getSomethingPHP` ? – Korty Jul 11 '18 at 10:05
See the duplicate question. – Quentin Jul 11 '18 at 10:07

Javascript XMLHttpRequest PHP returns "undefined"

0 Answers0