<!doctype html> <html> <head> <meta charset="utf-8"> <title>左下收缩项目导航</title> <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script> <style> .wrap { width:50px; height:50px; background:#AD4CC7; box-shadow:0 0 1px #CC6AE7; border-radius:50%; cursor:pointer; position:relative; position:fixed; bottom:50px; left:50px; z-index:999; transition:0.5s } .wrap img { width:50px; height:50px; position:absolute; top:0; right:0; left:0; bottom:0; margin:auto; border-radius:50% } .wrap .num1 { position:absolute; top:-89px; z-index:-1; border-radius:50%; text-align:center; line-height:40px; transition:.4s; right:20px; width:40px; height:40px; background:#CDD14E; box-shadow:0 0 1px #CDD14E; } .wrap .num2 { position:absolute; top:-67px; transition:0.6s; z-index:-1; text-align:center; line-height:40px; right:-37px; width:40px; height:40px; background:#CDD14E; box-shadow:0 0 1px #CDD14E; border-radius:50% } .wrap .num3 { position:absolute; top:-21px; transition:0.8s; z-index:-1; text-align:center; line-height:40px; right:-76px; width:40px; height:40px; background:#CDD14E; box-shadow:0 0 1px #CDD14E; border-radius:50% } .wrap .num4 { position:absolute; top:40px; transition:1s; z-index:-1; text-align:center; line-height:40px; right:-87px; width:40px; height:40px; background:#CDD14E; box-shadow:0 0 1px #CDD14E; border-radius:50% } .wrap .nums1 { top:0; left:0; right:0; bottom:0; margin:auto; transition:.4s; } .wrap .nums2 { top:0; left:0; right:0; bottom:0; margin:auto; transition:.6s; } .wrap .nums3 { top:0; left:0; right:0; bottom:0; margin:auto; transition:.8s; } .wrap .nums4 { top:0; left:0; right:0; bottom:0; margin:auto; transition:1s; } </style> </head> <body> <div class="wrap"> <div class="num1 nums1">1</div> <div class="num2 nums2">2</div> <div class="num3 nums3">3</div> <div class="num4 nums4">4</div> </div> <script> var i = 1; $(".wrap").click(function() { if (i == 0) { $(this).find(".num1").addClass("nums1"); $(this).find(".num2").addClass("nums2"); $(this).find(".num3").addClass("nums3"); $(this).find(".num4").addClass("nums4"); i = 1; } else { $(this).find(".num1").removeClass("nums1"); $(this).find(".num2").removeClass("nums2"); $(this).find(".num3").removeClass("nums3"); $(this).find(".num4").removeClass("nums4"); i = 0; } }); </script> </body> </html>
