js implementiert intelligente Suchfeld-Schlüsselwort-Matching-Code_Javascript-Fähigkeiten-js-Tutorial-php.cn

js implementiert intelligente Suchfeld-Schlüsselwort-Matching-Code_Javascript-Fähigkeiten

WBOY

Freigeben： 2016-05-16 15:22:20

Original

1130 Leute haben es durchsucht

Freunde, die Suchmaschinen verwenden, sollten diese Erfahrung machen, das heißt, wenn sie Schlüsselwörter in das Suchfeld eingeben, wird es auf jeden Fall eine sehr gute Benutzererfahrung geben. Natürlich Dies ist nur eine Vertuschung, sodass die Daten, die nur abgeglichen werden können, lokal festgelegt sind. In tatsächlichen Anwendungen können die Daten nur aus der Datenbank gelesen werden.

Rendering:

Das Codebeispiel lautet wie folgt:

<!DOCTYPE html>
<html>
<head>
<meta charset=" utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>搜索框关键字智能匹配实例代码</title>
<style>
body, ul, li 
{
 margin:0;
 padding:0;
}
body 
{
 font-size:12px;
 font-family:sumsun, arial;
 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:#666;
}
.gover_search .input_search_key 
{
 float:left;
 width:462px;
 height:18px;
 padding:3px;
 margin-right:5px;
 border:1px solid #ccc;
 line-height:18px;
 background:#fff;
}
.gover_search .search_btn 
{
 float:left;
 width:68px;
 height:26px;
 overflow:hidden;
 border:1px solid #ccc;
 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 #ccc;
 border-top:none;
 display:none;
 color:#004080;
}
.gover_search .search_suggest li 
{
 height:24px;
 overflow:hidden;
 padding-left:3px;
 line-height:24px;
 background:#fff;
 cursor:default;
}
.gover_search .search_suggest li.hover {background:#ddd;}
.num_right 
{
 float:right;
 text-align:right;
 line-height:24px;
 padding-right:10px
}
</style>
</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" src="http://www.softwhy.com/mytest/jQuery/jquery-1.8.3.js"></script>
<script type="text/javascript"> 
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(){ 
   $(this).find("span").remove(); 
   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 aData = []; 
 aData.push('<span class="num_right">约100个</span>'+keyword+'返回数据1'); 
 aData.push('<span class="num_right">约200个</span>'+keyword+'返回数据2'); 
 aData.push('<span class="num_right">约100个</span>'+keyword+'返回数据3'); 
 aData.push('<span class="num_right">约50000个</span>'+keyword+'返回数据4'); 
 aData.push('<span class="num_right">约1044个</span>'+keyword+'2012是真的'); 
 aData.push('<span class="num_right">约100个</span>'+keyword+'2012是假的'); 
 aData.push('<span class="num_right">约100个</span>'+keyword+'2012是真的'); 
 aData.push('<span class="num_right">约100个</span>'+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>

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