jquery的搜索框输入提示页面

xiaoxiao2021-02-28  107

<!doctype html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>搜索</title> <style type="text/css"> body, ul, li { margin: 0; padding: 0; } body { font-size: 12px; font-family: sumsun, arial; color: #666666; background: #FFFFFF; } .gover_search { position: relative; z-index: 99; height: 63px; padding: 15px 0 0 20px; border: 1px solid #b8cfe6; border-bottom: 0; background: url(../images/gover_search_bg.gif) repeat-x 0 0; } .gover_search_form { height: 36px; } .gover_search .search_t { float: left; width: 112px; line-height: 26px; color: #666666; } .gover_search .input_search_key { float: left; width: 462px; height: 18px; padding: 3px; margin-right: 5px; border: 1px solid #cccccc; line-height: 18px; background: #FFFFFF; } .gover_search .search_btn { float: left; width: 68px; height: 26px; overflow: hidden; border: 1px solid #cccccc; text-align: center; color: #ff3300; letter-spacing: 5px; background: url(../images/gover_search_bg.gif) no-repeat 0 -79px; cursor: pointer; font-weight: bold; } .gover_search .search_suggest { position: absolute; z-index: 999; left: 132px; top: 41px; width: 468px; border: 1px solid #999999; display: none; } .gover_search .search_suggest li { height: 24px; overflow: hidden; padding-left: 3px; line-height: 24px; background: #FFFFFF; cursor: default; } .gover_search .search_suggest li.hover { background: #DDDDDD; } </style> <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script> </head> <body> <div class="gover_search"> <div class="gover_search_form clearfix"> <span class="search_t">关键词匹配搜索</span> <input type="text" class="input_search_key" id="gover_search_key" placeholder="请输入关键词直接搜索" /> <button type="submit" class="search_btn">搜索</button> <div class="search_suggest" id="gov_search_suggest"> <ul> </ul> </div> </div> </div> <script type="text/javascript"> //实现搜索输入框的输入提示js类 function oSearchSuggest(searchFuc){ var input = $('#gover_search_key'); var suggestWrap = $('#gov_search_suggest'); var key = ""; var init = function(){ input.bind('keyup',sendKeyWord); input.bind('blur',function(){setTimeout(hideSuggest,100);}) } var hideSuggest = function(){ suggestWrap.hide(); } //发送请求,根据关键字到后台查询 var sendKeyWord = function(event){ //键盘选择下拉项 if(suggestWrap.css('display')=='block'&&event.keyCode == 38||event.keyCode == 40){ var current = suggestWrap.find('li.hover'); if(event.keyCode == 38){ if(current.length>0){ var prevLi = current.removeClass('hover').prev(); if(prevLi.length>0){ prevLi.addClass('hover'); input.val(prevLi.html()); } }else{ var last = suggestWrap.find('li:last'); last.addClass('hover'); input.val(last.html()); } }else if(event.keyCode == 40){ if(current.length>0){ var nextLi = current.removeClass('hover').next(); if(nextLi.length>0){ nextLi.addClass('hover'); input.val(nextLi.html()); } }else{ var first = suggestWrap.find('li:first'); first.addClass('hover'); input.val(first.html()); } } //输入字符 }else{ var valText = $.trim(input.val()); if(valText ==''||valText==key){ return; } searchFuc(valText); key = valText; } } //请求返回后,执行数据展示 this.dataDisplay = function(data){ if(data.length<=0){ suggestWrap.hide(); return; } //往搜索框下拉建议显示栏中添加条目并显示 var li; var tmpFrag = document.createDocumentFragment(); suggestWrap.find('ul').html(''); for(var i=0; i<data.length; i++){ li = document.createElement('LI'); li.innerHTML = data[i]; tmpFrag.appendChild(li); } suggestWrap.find('ul').append(tmpFrag); suggestWrap.show(); //为下拉选项绑定鼠标事件 suggestWrap.find('li').hover(function(){ suggestWrap.find('li').removeClass('hover'); $(this).addClass('hover'); },function(){ $(this).removeClass('hover'); }).bind('click',function(){ input.val(this.innerHTML); suggestWrap.hide(); }); } init(); }; //实例化输入提示的JS,参数为进行查询操作时要调用的函数名 var searchSuggest = new oSearchSuggest(sendKeyWordToBack); //这是一个模似函数,实现向后台发送ajax查询请求,并返回一个查询结果数据,传递给前台的JS,再由前台JS来展示数据。本函数由程序员进行修改实现查询的请求 //参数为一个字符串,是搜索输入框中当前的内容 function sendKeyWordToBack(keyword){ /* var obj = { "keyword" : keyword }; $.ajax({ type: "POST", url: "${ctx}/front/suqiu2/search/prompt-keyword.action", async:false, data: obj, dataType: "json", success: function(data){ //var json = eval("("+data+")"); var key=data.split(","); var aData = []; for(var i=0;i<key.length;i++){ //以下为根据输入返回搜索结果的模拟效果代码,实际数据由后台返回 if(key[i]!=""){ aData.push(key[i]); } } //将返回的数据传递给实现搜索输入框的输入提示js类 searchSuggest.dataDisplay(aData); } }); */ //以下为根据输入返回搜索结果的模拟效果代码,实际数据由后台返回 var aData = []; aData.push(keyword+'返回数据1'); aData.push(keyword+'返回数据2'); aData.push(keyword+'不是有的人天生吃素的'); aData.push(keyword+'不是有的人天生吃素的'); aData.push(keyword+'2012是真的'); aData.push(keyword+'2012是假的'); //将返回的数据传递给实现搜索输入框的输入提示js类 searchSuggest.dataDisplay(aData); } </script> </body> </html> 仿百度谷歌搜索输入下拉提示
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