本文实例讲述了JS实现仿google、百度搜索框输入信息智能提示的实现方法。分享给大家供大家参考。具体如下：
<!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> <title>仿google、百度搜索框输入信息智能提示的实现</title> <style type="text/css" media="screen"> body { font: 11px arial; } .suggest_link { width:120px; background-color: #FFFFFF; padding: 2px 6px 2px 6px; } .suggest_link_over { width:120px; background-color: #E8F2FE; padding: 2px 6px 2px 6px; } #suggestResult { position: absolute; background-color: #FFFFFF; text-align: left; border: 1px solid #000000; } /*input*/ .input_on { padding: 2px 8px 0pt 3px; height: 18px; border: 1px solid #999; background-color: #FFFFCC; } .input_off { padding: 2px 8px 0pt 3px; height: 18px; border: 1px solid #CCC; background-color: #FFF; } .input_move { padding: 2px 8px 0pt 3px; height: 18px; border: 1px solid #999; background-color: #FFFFCC; } .input_out { /*height:16px;默认高度*/ padding: 2px 8px 0pt 3px; height: 18px; border: 1px solid #CCC; background-color: #FFF; } </style> <script language="javascript" type="text/javascript"> var $ = document.getElementById; //创建XMLHttpRequest对象 function createXMLHttpRequest() { var obj; if (window.XMLHttpRequest) { //Mozilla 浏览器 obj = new XMLHttpRequest(); } else if (window.ActiveXObject) { // IE浏览器 try { obj = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { obj = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) { } } } return obj; } //当输入框的内容变化时，调用该函数 function searchSuggest() { var inputField = $("txtSearch"); var suggestText = $("suggestResult"); if (inputField.value.length > 0) { var o = createXMLHttpRequest(); var url = "SearchResult.ashx?searchText=" + escape(inputField.value); o.open("GET", url, true); o.onreadystatechange = function () { if (o.readyState == 4) { if (o.status == 200) { var sourceItems = o.responseText.split("/n"); if (sourceItems.length > 1) { suggestText.style.display = ""; suggestText.innerHTML = ""; for (var i = 0; i < sourceItems.length - 1; i++) { var sourceText = sourceItems[i].split("@")[1]; var sourceValue = sourceItems[i].split("@")[0]; var s = "<div onmouseover=/"javascript:suggestOver(this);/" "; s += " onmouseout=/"javascript:suggestOut(this);/" "; s += " onclick=/"javascript:setSearch('" + sourceText + "','" + sourceValue + "');/" "; s += " class=/"suggest_link/" >" + sourceText + "</div>"; suggestText.innerHTML += s; } } else { suggestText.style.display = "none"; } } } }; //指定响应函数 o.send(null); // 发送请求 } else { suggestText.style.display = "none"; } } function delayExecute() { $("valueResult").value = ""; window.setTimeout(function () { searchSuggest() }, 800); //延时处理 } function suggestOver(div_value) { div_value.className = "suggest_link_over"; } function suggestOut(div_value) { div_value.className = "suggest_link"; } function setSearch(a, b) { $("txtSearch").value = a; $("valueResult").value = b; var div = $("suggestResult"); div.innerHTML = ""; div.style.display = "none"; } function showResult() { alert($("txtSearch").value + $("valueResult").value); } </script></head><body> <form id="form1" action=""> <input type="text" id="txtSearch" name="txtSearch" onkeyup="delayExecute();" size="20" class="input_out" onfocus="this.className='input_on';this.onmouseout=''" onblur="this.className='input_off';this.onmouseout=function(){this.className='input_out'};" onmousemove="this.className='input_move'" onmouseout="this.className='input_out'" /> <input type="hidden" id="valueResult" name="valueResult" value="" /> <br /> <div id="suggestResult" style="display: none"> </div> <br/> <input id="button1" type="button" value="提交" onclick="showResult();" /> </form></body></html>
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