日期:2014-05-17 浏览次数:20758 次
效果图:
代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>search advice</title> <style type="text/css"> body { font-family:"yaHei Consolas Hybrid"; margin:0; } ul { margin:0; list-style:none; padding:0; } /*搜索栏*/ .search-block { width:400px; position:relative; margin:50px auto; } .search-block input { font-size:20px; } /*提示标签*/ .lbl-default { position:absolute; cursor:text; top:15px; left:15px; color:#ccc; } /*输入框*/ .txt-default { width:378px; height:28px; border:1px solid #ddd; padding:10px; } /*按钮*/ .btn { border:0; width:100px; height:50px; background-color:#56bdf3; color:#fff; text-align:center; cursor:pointer; } /*搜索按钮*/ .search-button { position:absolute; left:300px; top:0; } /*搜索建议*/ .search-advice { display:none; width:400px; position:absolute; background-color:#fff; } /*搜索建议列表*/ #search-advice-list { border-left:1px solid #ddd; border-right:1px solid #ddd; border-bottom:1px solid #ddd; } #search-advice-list li{ display:block; width:378px; height:30px; padding:10px; } #search-advice-list li:hover { background-color:#f5f5f5; } </style> <script type="text/javascript"> // 搜索建议模拟数据 var mockData = ['jsp','json','ajax','java','jquery','java','javascript']; // 根据id获取dom元素 function $(id) { return document.getElementById(id); } // 隐藏dom元素 function hide(dom) { dom.style.display = 'none'; } // 显示dom元素 function show(dom) { dom.style.display = 'block'; } // 将label绑定到input上作为输入提示 function bindLabelToInput(labelId, inputId) { // 获取输入焦点时,隐藏提示标签 $(inputId).onfocus = function() { hide($(labelId)); }; // 失去输入焦点时,判断输入框的是否有值,有则显示提示标签 $(inputId).onblur = function() { if (this.value == null || this.value.length < 1) { show($(labelId)); } }; } function createDomTo(tagName,arr,parentNode) { for (var i=0; i<arr.length; i++) { var tag = document.createElement(tagName); tag.innerHTML = arr[i]; parentNode.appendChild(tag); } } // 窗口加载完dom结构时 window.onload = function() { bindLabelToInput('lbl-search','txt-search'); // 搜索建议 var adviceWords = new Array(); var ul = $('search-advice-list'); // 建议列表 $('txt-search').onkeyup = function() { if (this.value.length > 0) { for (var i=0; i<mockData.length; i++) { if (mockData[i].indexOf(this.value) >= 0) { adviceWords.push(mockData[i]); } } // 有结果才显示提示框 if (adviceWords.length > 0) { ul.innerHTML = ''; createDomTo('li',adviceWords,ul); show(ul.parentNode); } adviceWords = new Array(); // 清空建议数据 } else { hide(ul.parentNode); } }; }; </script> </head> <body> <div class="search-block"> <label for="txt-search" id="lbl-search" class="lbl-default">请输入要搜索的内容</label> <input type="text" id="txt-search" class="txt-default"/> <input type="button" id="submit-button" class="btn search-button" value="搜索"/> <div class="search-advice"> <ul id="search-advice-list"> </ul> </div> </div> </body> </html>