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đây là thủ thuật của Wordpress : http://onepress-media.com/plugin/social-locker-for-wordpress
DEMO
Chèn code này trước ]]></b:skin>
/* --- Lock--- */ .to-lock{padding:20px} .inner-wrap{background:#435989}#header .get-it a{text-decoration:none;color:#000} #header .get-it #zenbox_tab{background-color:#f6f6f6!important} #zenbox_tab:hover{background-color:#333!important} #zenbox_tab #feedback_tab_text{color:#333!important} #zenbox_tab:hover #feedback_tab_text{color:#fff!important} .ui-social-locker,.ui-social-locker .ui-social-locker-text,.ui-social-locker .ui-social-locker-timer{font:normal normal 400 13px/23px "Arial",serif} .ui-social-locker,.ui-social-locker .ui-social-locker-outer-wrap,.ui-social-locker .ui-social-locker-inner-wrap{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box} .ui-social-locker{position:relative!important;background-color:#FFF;max-width:500px} .ui-social-locker p{margin:0} .ui-social-locker .ui-social-locker-text{text-align:center} .ui-social-locker-text .ui-social-locker-strong{font-weight:bold;text-transform:uppercase;font-size:16px;display:inline-block} .ui-social-locker-buttons{text-align:center} .ui-social-locker-text+.ui-social-locker-buttons{margin-top:15px} .ui-social-locker-button-inner-wrap,.ui-social-locker-button-overlay{height:40px;width:120px;padding:10px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;z-index:1} .ui-social-locker-button-inner-wrap{position:relative} .ui-social-locker-button{display:inline-block;vertical-align:top;text-align:left} .ui-social-locker-button-overlay{position:absolute;top:0;left:0} .ui-social-locker-button+.ui-social-locker-button{margin-left:10px} .ui-social-locker-button{background-color:#f2f2f2} .ui-social-locker-button .fb-like span,.ui-social-locker-button .fb-like iframe{height:20px!important} .ui-social-locker-button-overlay *{position:absolute;width:100%;top:0;left:0} .ui-social-locker-overlay-front,.ui-social-locker-overlay-back{height:100%;top:0;left:0} .ui-social-locker-overlay-front{z-index:1} .ui-social-locker-overlay-back{z-index:0} .ui-social-locker:hover .ui-social-locker-cross{opacity:.2;filter:alpha(opacity=20)} .ui-social-locker .ui-social-locker-cross:hover{opacity:.8;filter:alpha(opacity=80)} .ui-social-locker .ui-social-locker-timer{position:absolute;right:5px;bottom:5px;z-index:10} .ui-social-locker .ui-social-locker-timer,.ui-social-locker .ui-social-locker-timer *{font:normal normal 400 12px/12px sans-serif;text-transform:lowercase} .ui-social-locker .ui-social-locker-timer{color:#000;margin-left:5px} .ui-social-locker .ui-social-locker-timer-counter{font-weight:bold} .ui-social-locker-opera .ui-social-locker-button-facebook .fb-like{position:relative;top:-1px} .gc-bubbleDefault{display:none!important} .ui-social-locker-flip .ui-social-locker-button-inner-wrap{perspective:500px;perspective-origin:50% 0;-webkit-perspective:500px;-webkit-perspective-origin:50% 0;-moz-perspective:500px;-moz-perspective-origin:50% 0} .ui-social-locker-flip .ui-social-locker-button-overlay{display:block;transform-origin:bottom;transform-style:preserve-3d;transition:transform .3s ease;transform:translate(0);-webkit-transform-origin:bottom;-webkit-transform-style:preserve-3d;-webkit-transition:-webkit-transform .3s ease;-webkit-transform:translateY(0) rotateX(0);-moz-transform-origin:bottom;-moz-transform-style:preserve-3d;-moz-transition:-moz-transform .3s ease;-moz-transform:translate(0)} .ui-social-locker-flip .ui-social-locker-overlay-back{transform:rotateX(-180deg) translateZ(4px);-webkit-transform:rotateX(-180deg) translateZ(4px);-moz-transform:rotateX(-180deg) translateZ(4px)} .ui-social-locker-flip .ui-social-locker-overlay-header{height:4px;transform-origin:top;transform:rotateX(-90deg);-webkit-transform-origin:top;-webkit-transform:rotateX(-90deg);-moz-transform-origin:top;-moz-transform:rotateX(-90deg)} .ui-social-locker-flip:hover .ui-social-locker-button-overlay{display:block!important;transform:translateY(4px) rotateX(-110deg);-webkit-transform:translateY(4px) rotateX(-110deg);-moz-transform:translateY(4px) rotateX(-110deg)} .ui-social-locker-flip:hover .ui-social-locker-overlay-back{border-top:2px solid #eee} .ui-social-locker-secrets .fb-like span,.ui-social-locker-secrets .fb-like iframe{width:118px!important} .ui-social-locker-secrets{margin:5px auto;border:0;background-color:transparent} .ui-social-locker-secrets .ui-social-locker-inner-wrap{border:3px solid #fefefe;background-color:#EEE;padding:10px} .ui-social-locker-secrets .ui-social-locker-outer-wrap{border:1px solid #e6e6e6;box-shadow:0 0 40px rgba(0,0,0,0.08)} .ui-social-locker-secrets .ui-social-locker-text,.ui-social-locker-secrets .ui-social-locker-timer,.ui-social-locker-secrets .ui-social-locker-timer *{-webkit-text-shadow:1px 1px 2px #fff;-moz-text-shadow:1px 1px 2px #fff;text-shadow:1px 1px 2px #fff} .ui-social-locker-secrets .ui-social-locker-text .ui-social-locker-strong:before,.ui-social-locker-secrets .ui-social-locker-text .ui-social-locker-strong:after{content:" ";display:inline-block;width:11px;height:14px;margin:0 9px;background:url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgddBtvu2iT3hu2Jz-YViiWVZ1VHkKHwD6se5p1XVrmlrKu7L9j-cUTUtamdDVnso2Kl3mmZrpUkG2IhyBbdzKn9KiEHzIf2Ijlvz_rsm0z4ppWOAYT5y1TERQRudzE3cuMRAkyDHkDH8k/s1600/lock-icon.png) 0 2px no-repeat} .ui-social-locker-secrets .ui-social-locker-text .ui-social-locker-strong:after{margin-left:10px} .ui-social-locker-secrets .ui-social-locker-button{padding:4px;background:rgba(0,0,0,0.05)} .ui-social-locker-secrets .ui-social-locker-button-inner-wrap,.ui-social-locker-secrets .ui-social-locker-button-overlay{height:34px;width:118px} .ui-social-locker-secrets .ui-social-locker-button-inner-wrap{padding:7px;-moz-box-shadow:inset 0 0 6px rgba(0,0,0,0.25);-webkit-box-shadow:inset 0 0 6px rgba(0,0,0,0.25);box-shadow:inset 0 0 6px rgba(0,0,0,0.25)} .ui-social-locker-secrets .ui-social-locker-button-facebook .ui-social-locker-overlay-front{background:url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYxAixTG14KGKRrm096MlltPrERK6MW0PHapqh3NiuYHihnbYvaThPsdhNwwhmLVZ5FNBqBYBCbAtf21kui5nExswDAUIzRyQ2w6CaiSSGGG0M7pRl5p53BP-GIctkSm5igJf7AdP1B78/s1600/LIKE.png) top left no-repeat} .ui-social-locker-secrets .ui-social-locker-button-facebook .ui-social-locker-overlay-back{background:#46629e} .ui-social-locker-secrets .ui-social-locker-button-facebook .ui-social-locker-overlay-header{background-color:#314775} .ui-social-locker-secrets .ui-social-locker-button-google .ui-social-locker-overlay-front{background:url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTUW0CZiu7sldDciT6yNlpbXd3Lm9OzcAXYvYXqkvRyzy5veUg7l-OAKtuF413cn6UPMIjcN9YRDRJbztN9jzQ32FT8B4Sa7Ns6XdFZcloXuMvhOPMRToaems5RJwwqse21cUCvfLtnbA/s1600/PLUS.png) top left no-repeat} .ui-social-locker-secrets .ui-social-locker-button-google .ui-social-locker-overlay-back{background:#494647} .ui-social-locker-secrets .ui-social-locker-button-google .ui-social-locker-overlay-header{background-color:#111} .ui-social-locker-secrets .ui-social-locker-cross{top:38px;right:38px} .ui-social-locker-secrets .ui-social-locker-dandyish .ui-social-locker-outer-wrap{padding:5px;background-color:#fff;border-radius:10px} #icopyright{ text-align: center; font-family:Arial, serif; text-transform: uppercase; font-weight:bold; font-size:7px; position:relative}
Tiếp tục chèn code này trước </head>
<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js' type='text/javascript'></script>
Lưu ý: nếu trong template của bạn đã có jquery.min thì bỏ qua bước này.
Cuối cùng sử dụng code này trong bài viết cần khóa nội dung hoặc liên kết.
<article id="default-usage"> <div class="to-lock" style="display: none;"> <div style="text-align: justify"> Nội dung sẽ ẩn ở đây, link, hình ảnh... </div> </article> </div><div id="icopyright"> </div> <script type="text/javascript" src="https://bloggerviet.googlecode.com/svn/trunk/Locklike.js"></script> <script> jQuery(document).ready(function ($) { $("#default-usage .to-lock").socialLock({ text: { header: "Nội dung đã bị khóa", message: "LIKE hoặc +1 để xem nội dung" }, style: "ui-social-locker-secrets", buttons: { order: ["facebook", "google"] }, // facebook options facebook: { url: "http://www.facebook.com/abc", appId: "0123456789" }, google: { url: "http://www.yourblogger.com" } }); });;;; </script>
thay thế link và ID cho phù hợp với bạn
hày tải file này lên Host riêng để chạy nhanh hơn: https://bloggerviet.googlecode.com/svn/trunk/Locklike.js
Một số tính năng khác
hày tải file này lên Host riêng để chạy nhanh hơn: https://bloggerviet.googlecode.com/svn/trunk/Locklike.js
Một số tính năng khác
Dưới đây là một số tính năng thú vị nhất:
Plugin này hoạt động với các plugin bộ nhớ đệm và không thêm phụ tải trên blog của bạn.
Locker hỗ trợ thiết bị di động .
Plugin này là thân thiện với SEO . Đã khóa nội dung vẫn là có sẵn cho chương trình tìm kiếm (Google, Bing, vv).