Need Help Reading JSON object from a URL in a HTML -

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i trying create website in can particular json object url , display on website. field trying display uv_index out of 3 fields. nothing being printed out. don't know if getting json object. 

<!doctype html> <html> <body>  <h2>epa </h2>  <p id="demo"></p>  <script> var getjson = function(url) {   return new promise(function(resolve, reject) {     var xhr = new xmlhttprequest();     xhr.open('get', url, true);     xhr.responsetype = 'json';     xhr.onload = function() {       var status = xhr.status;       if (status == 200) {         resolve(xhr.response);       } else {         reject(status);       }     };     xhr.send();   }); };  getjson('http://iaspub.epa.gov/enviro/efservice/getenvirofactsuvdaily/zip/92507/json').then(function(data) {     document.getelementbyid('uv_index').innerhtml=json.result;     alert('your json result is:  ' + json.result); //you can comment this, used debug      result.innertext = data.result; //display result in html element }, function(status) { //error detection....   alert('something went wrong.'); }); </script>  </body> </html>

i added third-party chrome extenstion cors issue. error 

uncaught (in promise) referenceerror: json not definedmessage: "json not defined"stack: (...)get stack: function () { [native code] }set stack: function () { [native code] }__proto__: error

you can try using ajax plugin make cors request cors headers not being served service.

add jquery library , add installed cors ajax scripts after that:

<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script> <script type="text/javascript" src="js/jquery.ajax-cross-origin.min.js"></script>

now can make cross origin request adding crossorigin: true in ajax: e.g.

$.ajax({     crossorigin: true,     url: "http://iaspub.epa.gov/enviro/efservice/getenvirofactsuvdaily/zip/92507/json/",     success: function(data) {         console.log(data);         } });

you can try putting same url in below demo page receive json data. see live demo.


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