javascript - Get data out of JSON array from external URL -

-

i relatively new json. have read tutorial , trying implement no luck. have external url gives json data/feed. data in form of array. trying write javascript program (on local) data out of url , put in html.

here function. includes external link also. not getting result. empty. missing or doing wrong?

 <!doctype html>  <html>  <head>  <meta charset="utf-8">  <title>index page</title>  </head>   <body>  <div id="id01"></div>   <script>   var xmlhttp = new xmlhttprequest();   var url = "http://mpatrizio-001-site5.smarterasp.net/categorylist.php?d=b7acef70-4901-41c8-930f-d4d681d82daa";    xmlhttp.onreadystatechange = function() {      if (xmlhttp.readystate == 4 && xmlhttp.status == 200) {          var myarr = json.parse(xmlhttp.responsetext);          myfunction(myarr);      }  }  xmlhttp.open("get", url, true);  xmlhttp.send();   function myfunction(arr) {      var out = "";      var i;      for(i = 0; < arr.length; i++) {          out += arr[i].categoryid + '<br>';      }      document.getelementbyid("id01").innerhtml = out;  }  </script>       </body>  </html>


update:

after being pointed in right direction guys (thank that), have found request being blocked server due cors error. studying it. please review following image of error got in console. it, can point out solution? enter image description here

append --disable-web-security (at path c;...\chrome.exe) in chrome's exe properties preceded space.

more elegant solution:

other solution on server side. create crossdomain.xml , clientaccesspolicy.xml file on server. it's structure like:

crossdomain.xml:

<!doctype cross-domain-policy system "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd"> <cross-domain-policy>   <allow-http-request-headers-from domain="*" headers="soapaction,content-type"/> </cross-domain-policy>

clientaccesspolicy.xml:

<?xml version="1.0" encoding="utf-8"?> <access-policy>   <cross-domain-access>     <policy>       <allow-from http-request-headers="soapaction">         <domain uri="*"/>       </allow-from>       <grant-to>         <resource path="/" include-subpaths="true"/>       </grant-to>     </policy>   </cross-domain-access> </access-policy>

some of tutorials are:

http://help.adobe.com/en_us/as2lcr/flash_10.0/help.html?content=00000469.html

http://www.adobe.com/devnet/articles/crossdomain_policy_file_spec.html

its specification is:

http://www.adobe.com/devnet-docs/acrobatetk/tools/appsec/crossdomain_policyfile_specification.pdf

other tutorials:

https://msdn.microsoft.com/en-us/library/cc197955(v=vs.95).aspx


Comments

Post a Comment

Popular posts from this blog

c# - Better 64-bit byte array hash -

-
i need hash algorithm produces 64-bit hash code ( long ) fewer collisions string.gethashcode() , fast (no expensive calls cryptographic functions). here's implementation of fnv still shows 3% of collisions after testing 2 million random strings. need number way lower. void main() { const string chars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz!#@$%^&*()_+}{\":?><,./;'[]0123456789\\"; const int n = 2000000; var random = new random(); var hashes = new hashset<long>(); int collisions = 0; for(int = 0; < n; i++) { var len = random.next(chars.length); var str = new char[len]; (int j = 0; j < len; j++) { str[j] = chars[random.next(chars.length)]; } var s = new string(str); if(!hashes.add(get64bithash( s ))) collisions++; } console.writeline("collision percentage after " + n + " random strings: " + ((doubl
Read more

webrtc - Which ICE candidate am I using and why? -

-
[questions in bold below] i have setup kurento media server 5.1.3 in datacenter behind firewall running os ubuntu 14.04. has 2 network cards: 222.222.222.222 (eth0 - private ip) 111.111.111.111 (eth1 - public ip) attached below sdp (setremotedescription) when browser connected kurento media server type: answer, sdp: v=0 o=- 5487318114793304426 0 in ip4 0.0.0.0 s=kurento media server c=in ip4 0.0.0.0 t=0 0 a=group:bundle audio video m=audio 59068 rtp/savpf 111 0 c=in ip4 111.111.111.111 a=rtpmap:111 opus/48000/2 a=rtpmap:0 pcmu/8000 a=sendrecv a=rtcp:59068 in ip4 111.111.111.111 a=rtcp-mux a=ssrc:669011897 cname:user39019747@host-6e83e4c2 a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time a=mid:audio b=as:20 a=ice-ufrag:ymdk a=ice-pwd:lylifk5ueqzpwm91ddj37e a=fingerprint:sha-256 ff:0f:81:8c:41:4e:b4:b6:c6:d8:36:f3:d6:5f:09:fd:5f:af:13:b3:9d:fc:12:66:ac:f3:56:d6:5b:0a:73:5d a=candidate:1 1 udp 2013266431 111.111.111.111 55239 typ host a=candidate:2 1 udp
Read more

php - Zend Framework / Skeleton-Application / Composer install issue -

-
i trying create zend framework application using skeleton in netbeans. when run composer install, following error message: "c:\php\php.exe" "c:\composer\composer.phar" "--ansi" "--no-interaction" "update" "--dev" using deprecated option "dev". dev packages installed default now. loading composer repositories package information updating dependencies (including require-dev) requirements not resolved installable set of packages. problem 1 - package requires php >=5.5 php version (5.4.42) not satisfy requirement. problem 2 - installation request zendframework/zendframework 2.5.1 -> satisfiable zendframework/zendframework[2.5.1]. - zendframework/zendframework 2.5.1 requires php >=5.5 -> php version (5.4.42) not satisfy requirement. done. apparently, zend framework only needs php 5.3+ contradicts above. need use php 5.4. my composer.json following: { "name": "
Read more