很多网页都实现了弹出窗口，使用方面，特别的人性化，本文就大家介绍javascript实现弹出窗口特效，具体代码如下：
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>弹出窗口</title> <script src="js/jquery-1.11.1.js"></script> <style> *{ margin: 0; padding: 0; } div{ margin: 0 auto; /*border: 1px solid red;*/ } .overBg{ width: 100%; height: 100%; background: gray; opacity: 0.5; filter: alpha(opacity=50); position: fixed; top:0; z-index: 300; } .tc-con{ width: 200px; height: 200px; padding: 30px; background: blanchedalmond; position: fixed; top: 0; z-index: 1000; } </style> <script> $(function(){ $('.tc').hide(); $('.btn').click(function(){ $('.tc').show(); }) $('.tc').click(function(){ $(this).hide(); }) }) </script> </head> <body> <div>点击出现</div> <div> <div></div> <div id="tc-con">22</div> <script> var a=document.getElementById('tc-con'); a.style.left=(document.body.clientWidth/2- a.clientWidth/2)+'px'; a.style.top=(document.documentElement.clientHeight/2- a.clientHeight/2)+'px'; </script> </div> <div>22</div> </body> </html><!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>弹出窗口</title> <script src="js/jquery-1.11.1.js"></script> <style> *{ margin: 0; padding: 0; } div{ margin: 0 auto; /*border: 1px solid red;*/ } .overBg{ width: 100%; height: 100%; background: gray; opacity: 0.5; filter: alpha(opacity=50); position: fixed; top:0; z-index: 300; } .tc-con{ width: 200px; height: 200px; padding: 30px; background: blanchedalmond; position: fixed; top: 0; z-index: 1000; } </style> <script> $(function(){ $('.tc').hide(); $('.btn').click(function(){ $('.tc').show(); }) $('.tc').click(function(){ $(this).hide(); }) }) </script> </head> <body> <div>点击出现</div> <div> <div></div> <div id="tc-con">22</div> <script> var a=document.getElementById('tc-con'); a.style.left=(document.body.clientWidth/2- a.clientWidth/2)+'px'; a.style.top=(document.documentElement.clientHeight/2- a.clientHeight/2)+'px'; </script> </div> <div>22</div> </body> </html>
效果图：
以上就是为大家分享的javascript弹出窗口实现代码，希望对大家的学习有所帮助。