Cách khóa nội dung website bằng liên kết mạng xã hội dễ dàng

<div id="fb-root"></div> <script><br /> function showDiscountCode(response) {<br /> // if they unliked you...<br /> if (response && response.state === 'off') {<br /> hideDiscountCode();<br /> } else {<br /> $('.discount-code').slideDown('slow');<br /> }<br /> }<br /> function hideDiscountCode() {<br /> $('.discount-code').slideUp('slow');<br /> }<br /> // load js for facebook<br /> (function(d, s, id) {<br /> var js, fjs = d.getElementsByTagName(s)[0];<br /> if (d.getElementById(id)) return;<br /> js = d.createElement(s); js.id = id;<br /> js.src = "//connect.facebook.net/en_US/all.js#xfbml=1";<br /> fjs.parentNode.insertBefore(js, fjs);<br /> }(document, 'script', 'facebook-jssdk')); <p> // load js for twitter<br /> window.twttr = (function (d,s,id) {<br /> var t, js, fjs = d.getElementsByTagName(s)[0];<br /> if (d.getElementById(id)) return; js=d.createElement(s); js.id=id;<br /> js.src="//platform.twitter.com/widgets.js";<br /> fjs.parentNode.insertBefore(js, fjs);<br /> return window.twttr || (t = { _e: [], ready: function(f){ t._e.push(f) } });<br /> }(document, "script", "twitter-wjs"));</p> <p> // sets up event listeners for when someone (un)likes the page<br /> window.fbAsyncInit = function() {<br /> FB.init({ appId: 'YOUR_APP_ID', status : true, cookie : true, xfbml : true });<br /> FB.Event.subscribe('edge.create', function(response) { showDiscountCode(); });<br /> FB.Event.subscribe('edge.remove', function(response) { hideDiscountCode(); });<br /> };</p> <p> // setup event listener for tweet callback<br /> twttr.ready(function (twttr) {<br /> twttr.events.bind('tweet', function(event) {<br /> showDiscountCode();<br /> });<br /> });<br /> </p></script> <!-- the sharing buttons --> <a href="https://twitter.com/share" data-text="Your tweet text" data-url="http://your-url-here.com" data-via="YourHandle" class="twitter-share-button" data-lang="en"></a> <div class="fb-like" data-href="http://www.facebook.com/your_fb_page" data-layout="button_count" data-action="like" data-show-faces="false" data-share="false"></div> <div class="g-plusone" data-size="medium" data-annotation="inline" data-width="300" data-callback="showDiscountCode" data-href="http://your-url-here.com"></div> <!-- the hidden content --> <div class="discount-code">The discount code is: <strong>DH002</strong></div>