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1 <!doctype html> 2 <html> 3 <style> 4 body { 5 margin-left: 0px; 6 margin-top: 0px; 7 margin-right: 0px; 8 margin-bottom: 0px; 9 } 10 .auto_hidden { 11 width:204px;border-top: 1px solid #333; 12 border-bottom: 1px solid #333; 13 border-left: 1px solid #333; 14 border-right: 1px solid #333; 15 position:absolute; 16 display:none; 17 } 18 .auto_show { 19 width:204px; 20 border-top: 1px solid #333; 21 border-bottom: 1px solid #333; 22 border-left: 1px solid #333; 23 border-right: 1px solid #333; 24 position:absolute; 25 z-index:9999; /* 设置对象的层叠顺序 */ 26 display:block; 27 } 28 .auto_onmouseover{ 29 color:#ffffff; 30 background-color:highlight; 31 width:100%; 32 } 33 .auto_onmouseout{ 34 color:#000000; 35 width:100%; 36 background-color:#ffffff; 37 } 38 </style> 39 <script language="javascript"> 40 <!-- 41 var $ = function (id) { 42 return "string" == typeof id ? document.getElementById(id) : id; 43 } 44 var Bind = function(object, fun) { 45 return function() { 46 return fun.apply(object, arguments); 47 } 48 } 49 function AutoComplete(obj,autoObj,arr){ 50 this.obj=$(obj); //输入框 51 this.autoObj=$(autoObj);//DIV的根节点 52 this.value_arr=arr; //不要包含重复值 53 this.index=-1; //当前选中的DIV的索引 54 this.search_value=""; //保存当前搜索的字符 55 } 56 AutoComplete.prototype={ 57 //初始化DIV的位置 58 init: function(){ 59 this.autoObj.style.left = this.obj.offsetLeft + "px"; 60 this.autoObj.style.top = this.obj.offsetTop + this.obj.offsetHeight + "px"; 61 this.autoObj.style.width= this.obj.offsetWidth - 2 + "px";//减去边框的长度2px 62 }, 63 //删除自动完成需要的所有DIV 64 deleteDIV: function(){ 65 while(this.autoObj.hasChildNodes()){ 66 this.autoObj.removeChild(this.autoObj.firstChild); 67 } 68 this.autoObj.className="auto_hidden"; 69 }, 70 //设置值 71 setValue: function(_this){ 72 return function(){ 73 _this.obj.value=this.seq; 74 _this.autoObj.className="auto_hidden"; 75 } 76 }, 77 //模拟鼠标移动至DIV时，DIV高亮 78 autoOnmouseover: function(_this,_div_index){ 79 return function(){ 80 _this.index=_div_index; 81 var length = _this.autoObj.children.length; 82 for(var j=0;j<length;j++){ 83 if(j!=_this.index ){ 84 _this.autoObj.childNodes[j].className=‘auto_onmouseout‘; 85 }else{ 86 _this.autoObj.childNodes[j].className=‘auto_onmouseover‘; 87 } 88 } 89 } 90 }, 91 //更改classname 92 changeClassname: function(length){ 93 for(var i=0;i<length;i++){ 94 if(i!=this.index ){ 95 this.autoObj.childNodes[i].className=‘auto_onmouseout‘; 96 }else{ 97 this.autoObj.childNodes[i].className=‘auto_onmouseover‘; 98 this.obj.value=this.autoObj.childNodes[i].seq; 99 } 100 } 101 } 102 , 103 //响应键盘 104 pressKey: function(event){ 105 var length = this.autoObj.children.length; 106 //光标键"↓" 107 if(event.keyCode==40){ 108 ++this.index; 109 if(this.index>length){ 110 this.index=0; 111 }else if(this.index==length){ 112 this.obj.value=this.search_value; 113 } 114 this.changeClassname(length); 115 } 116 //光标键"↑" 117 else if(event.keyCode==38){ 118 this.index--; 119 if(this.index<-1){ 120 this.index=length - 1; 121 }else if(this.index==-1){ 122 this.obj.value=this.search_value; 123 } 124 this.changeClassname(length); 125 } 126 //回车键 127 else if(event.keyCode==13){ 128 this.autoObj.className="auto_hidden"; 129 this.index=-1; 130 }else{ 131 this.index=-1; 132 } 133 }, 134 //程序入口 135 start: function(event){ 136 if(event.keyCode!=13&&event.keyCode!=38&&event.keyCode!=40){ 137 this.init(); 138 this.deleteDIV(); 139 this.search_value=this.obj.value; 140 var valueArr=this.value_arr; 141 valueArr.sort(); 142 if(this.obj.value.replace(/(^\s*)|(\s*$)/g,‘‘)==""){ return; }//值为空，退出 143 try{ var reg = new RegExp("(" + this.obj.value + ")","i");} 144 catch (e){ return; } 145 var div_index=0;//记录创建的DIV的索引 146 for(var i=0;i<valueArr.length;i++){ 147 if(reg.test(valueArr[i])){ 148 var div = document.createElement("div"); 149 div.className="auto_onmouseout"; 150 div.seq=valueArr[i]; 151 div.onclick=this.setValue(this); 152 div.onmouseover=this.autoOnmouseover(this,div_index); 153 div.innerHTML=valueArr[i].replace(reg,"<strong>$1</strong>");//搜索到的字符粗体显示 154 this.autoObj.appendChild(div); 155 this.autoObj.className="auto_show"; 156 div_index++; 157 } 158 } 159 } 160 this.pressKey(event); 161 window.onresize=Bind(this,function(){this.init();}); 162 } 163 } 164 //--> 165 </SCRIPT> 166 <body> 167 <h1 align="center">自动完成函数(Autocomplete Function)</h1> 168 <div align="center"><input type="text" style="width:300px;height:20px;font-size:14pt;" id="o" onkeyup="autoComplete.start(event)"></div> 169 <div class="auto_hidden" id="auto"><!--自动完成 DIV--></div> 170 <script> 171 var autoComplete=new AutoComplete(‘o‘,‘auto‘,[‘b0‘,‘b12‘,‘b22‘,‘b3‘,‘b4‘,‘b5‘,‘b6‘,‘b7‘,‘b8‘,‘b2‘,‘abd‘,‘ab‘,‘acd‘,‘accd‘,‘b1‘,‘cd‘,‘ccd‘,‘cbcv‘,‘cxf‘]); 172 </SCRIPT> 173 </body> 174 </html>
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原文地址：http://www.cnblogs.com/kwpsz/p/4672020.html
