Using a JavaScript method from Facebook [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 11 years ago.

I found this code from Facebook. I would like to use a structure in this way. How can I use this method?

   for (;;);{"__ar":1,"payload":null,"css":["wOyD6","Dk+z9","uUZcv"],"js":["TNp9j","12BHN"],"onload":["(function(){var k=Arbiter.subscribe(\"xhpc\\\/construct\\\/\"+this.id,function(_,c){(function(){Arbiter.unsubscribe(k);}).defer();c.mutate({\"xhpc\":\"u598502_6\",\"endpoint\":\"\\\/ajax\\\/questions\\\/save.php\",\"formType\":1,\"inputHidden\":true,\"placeholder\":\"Bir \\u015fey sor...\",\"buttonLabel\":\"Payla\\u015f\",\"blurb\":\"\\u003ca class=\\\"addPollOptionsLink\\\" rel=\\\"async\\\" ajaxify=\\\"\\\/ajax\\\/questions\\\/show_poll_composer.php?xhpc_ismeta=true\\\">Anket \\u015e\\u0131klar\\u0131 Ekle\\u003c\\\/a>\",\"content\":\"\\u003cdiv class=\\\"webComposerQuestion\\\">\\u003cinput type=\\\"hidden\\\" autocomplete=\\\"off\\\" name=\\\"source\\\" value=\\\"composer\\\" \\\/>\\u003cdiv class=\\\"mas\\\">\\u003ctextarea class=\\\"DOMControl_placeholder uiTextareaNoResize uiTextareaAutogrow questionInput fluidInput\\\" title=\\\"Bir \\u015fey sor...\\\" spellcheck=\\\"true\\\" name=\\\"question\\\" maxlength=\\\"500\\\" placeholder=\\\"Bir \\u015fey sor...\\\" id=\\\"u614163_1\\\" onfocus=\\\"return wait_for_load(this, event, function() {if (!this._has_control) {  new TextAreaControl(this).setAutogrow(true);  this._h开发者_JS百科as_control = true; } });\\\">Bir \\u015fey sor...\\u003c\\\/textarea>\\u003c\\\/div>\\u003c\\\/div>\",\"hideTopicTagger\":true});c.subscribe(\"init\", new Function(\"onloadRegister(function (){Input.enableAutoCapitalize($(\\\"u614163_1\\\"), \\\"\\\");});\\n\"));});;}).apply(DOM.find(this.getRelativeTo(),\"^div.uiComposer\"))"],"bootloadable":{"maxlength-form-listener":["LayX0","nO1QQ","12BHN"]},"resource_map":{"wOyD6":{"type":"css","src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/yC\/r\/Zg0ARUxUS6N.css"},"Dk+z9":{"type":"css","src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/yw\/r\/q4nJ2ZkJtyT.css"},"uUZcv":{"type":"css","permanent":1,"src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/yO\/r\/4okS7_KFNGX.css"},"TNp9j":{"type":"js","src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/yo\/r\/8rrAXwg5z80.js"},"12BHN":{"type":"js","src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/yg\/r\/jkR6Xtb9PGX.js"},"LayX0":{"type":"js","src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/yn\/r\/HT0e0kw4zvt.js"},"nO1QQ":{"type":"js","src":"https:\/\/s-static.ak.facebook.com\/rsrc.php\/v1\/y8\/r\/Cu4Eol99gUR.js"}}}

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It's not clear what exactly you are asking. You can't "run" this code, it's a JSON string. If you want to access the data, you'll need to parse it some way, for example parseJSON in jquery.

I suspect you may be getting tripped up by the leading for (;;); string. This is a protective device put there to keep people from simply using eval() to process the data. Using eval() is an old quick-and-dirty way to parse JSON directly into javascript variables, but it's an unsafe practice. To prevent it Facebook adds the for-loop code to the front of the string, so that if you try to eval it you just get an infinite loop and a hung browser. You could of course strip that part off of the string and then use eval anyway, but you're much better off parsing it properly.