網上昨天學了一個導航條效果 今天手動實現了一下 開心。。。
翠花,上效果圖!
實現代碼如下(思路見代碼):
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>navdemo1</title> <style> /* 1.位置屬性(position, top, right, z-index, display, float等) 2.大小(width, height, padding, margin) 3.文字系列(font, line-height, letter-spacing, color- text-align等) 4.背景(background, border等) 5.其他(animation, transition等) */ * { padding: 0; margin: 0; font-family: 'Microsoft YaHei'; } a{text-decoration:none;} li{list-style:none;} .nav-wrap{position:relative;background-color:#000;} .nav-wrap .nav{width:1000px;margin:0 auto; overflow:hidden;} .nav-wrap .nav li{float:left;} .nav-wrap .nav li a{display:block; height:50px;padding:0 50px;line-height:50px;color:#fff;transition:background-color 0.3s linear;} .nav-wrap .nav li a:hover,.nav-wrap .nav li a.active{background-color:#484646;} .nav-wrap .line{display:block;position:absolute;bottom:0;width:50px;height:2px;background-color:#ff6a00;} </style> <script src="~/Scripts/jquery-1.8.2.js"></script> <script src="~/Scripts/jquery.easing.1.3.js"></script> <script> $(function () { navdeal(); }); //導航條效果處理 //思路: //1.下滑條絕對定位到導航條模塊的底部 //2.js控制下滑條 寬度=當前菜單項的寬度 左邊距=當前菜單項相對父元素(.nav-wrap)的左偏移 //3.加上easing.js中的彈性效果 var navdeal = function () { var $item_active = $('.nav-wrap .nav li a.active'); var $nav_line = $('.nav-wrap .line'); var item_width = $item_active.outerWidth(); var item_position_left = $item_active.position().left; $nav_line.css({ 'width': item_width, 'margin-left': item_position_left }); //菜單項鼠標移入,移出事件綁定 $('.nav-wrap .nav li a').bind({ mouseover: function () { var item_width = $(this).outerWidth(); var item_position_left = $(this).position().left; $nav_line.stop().animate({ 'width': item_width, 'margin-left': item_position_left }, 800, 'easeOutBounce'); }, mouseout: function () { $nav_line.stop().animate({ 'width': item_width, 'margin-left': item_position_left }, 800, 'easeOutBounce'); } }); } </script> </head> <body> <div class="nav-wrap"> <ul class="nav"> <li><a href="#" class="active">首頁</a></li> <li><a href="#">我的訂單</a></li> <li><a href="#">我的購物車</a></li> <li><a href="#">退出</a></li> </ul> <span class="line"></span> </div> </body> </html>