Why parsing JSON in firefox doesn't work

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0

I'm bumping my head for a long time and i googled a lot but i can't find a solution, i hope someone can explain to me why this code is working without problems in Chrome, meanwhile in Firefox/Safari i get a bunch of errors.

Here is what i did:

 getJSON = function(url, successHandler, errorHandler){

    var xhr = new XMLHttpRequest();
    xhr.open('get', url, true);
    xhr.responseType = 'json';

    xhr.onload = function(){
        var status = xhr.status;
        if (status == 200) {
            successHandler && successHandler(xhr.response);
            chartLoad(xhr.response)
        } else {
            errorHandler && errorHandler(status);
        }
    };

    xhr.send();
}; 

An then:

 function chartLoad(data){
    chart = AmCharts.makeChart("graph", {
       ...
       dataProvider: data,
       ...
      });
 };

 getJSON('/test/json');

In console i get:

Unexpected value NaN parsing width attribute.

Unexpected value NaN parsing x attribute.

Unexpected value translate(NaN,0) parsing transform attribute.

asked 1 min ago

Jack

39