facebook like social plugin not working -

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i trying use facebook plugin has , send button.the source code of page follows-

<html> <body> hello  <div id="fb-root"></div> <script>(function(d, s, id) {   var js, fjs = d.getelementsbytagname(s)[0];   if (d.getelementbyid(id)) return;   js = d.createelement(s); js.id = id;  js.src = "//connect.facebook.net/en_us/all.js#xfbml=1&appid=138876406236026";  fjs.parentnode.insertbefore(js, fjs); }(document, 'script', 'facebook-jssdk'));</script>  <div class="fb-send"></div> </body>

why not working?

it wont work on local system ,you should put in website , ex: www.sample.com ,


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