这篇文章主要介绍了ASP模仿google suggest风格实现下拉菜单效果,需要的朋友可以参考下
今天和大家一起利用ASP模仿实现google suggest风格的下拉菜单,直接上代码
1.前台代码:
- <%@LANGUAGE="JAVASCRIPT" CODEPAGE="936"%>
- <!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">
- <style type="text/css">
- <!--
- .style1 {color: #FF0000}
- .mouseOut
- {
- font-size:12px;
- background: #708090;
- color: #FFFAFA;
- }
- .mouseOver
- {
- font-size:12px;
- background: #FFFAFA;
- color: #000000;
- }
- -->
- </style>
- <script type="text/javascript" language="javascript">
- var xmlHttp;
- var completeDiv;
- var inputField;
- var nameTable;
- var nameTableBody;
- var flag=false;
- function createXMLHttpRequest() {
- if (window.ActiveXObject) {
- xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
- }
- else if (window.XMLHttpRequest) {
- xmlHttp = new XMLHttpRequest();
- }
- }
- function setflag(){
- flag = true;
- }
- function DisSelect()
- {
- if(flag==false)
- document.getElementById("popup").style.display="none";
- }
- function initVars() {
- inputField = document.getElementById("frmchangshang");
- nameTable = document.getElementById("name_table");
- completeDiv = document.getElementById("popup");
- nameTableBody = document.getElementById("name_table_body");
- document.getElementById("popup").style.display="block";
- }
- function findNames() {
- initVars();
- if (inputField.value.length > 0)
- {
- createXMLHttpRequest();
- var url = "search.asp?names=" + inputField.value;
- xmlHttp.open("GET", url, true);
- xmlHttp.onreadystatechange = callback;
- xmlHttp.send(null);
- }
- else
- {
- clearNames();
- }
- }
- function callback() {
- if (xmlHttp.readyState == 4) {
- if (xmlHttp.status == 200)
- {
- try
- {
- var name = xmlHttp.responseXML.getElementsByTagName("name")
- [0].firstChild.data;
- }
- catch(e)
- {
- document.getElementById("popup").style.display="none";
- clearNames();
- }
- setNames(xmlHttp.responseXML.getElementsByTagName("content"));
- }
- else if (xmlHttp.status == 204)
- {
- clearNames();
- }
- }
- }
- function setNames(the_names) {
- clearNames();
- var size = the_names.length;
- setOffsets();
- var row,cell,spans;
- for (var i = 0; i < size; i++) {
- //var nextNode = the_names[i].firstChild.data;
- var e = the_names[i];
- //取得子节点内容,重新装载为数组
- var nextNode=e.getElementsByTagName("name")[0].firstChild.data;
- //创建tr,td,span元素
- row =document.createElement("tr");
- cell =document.createElement("td");
- //spans=document.createElement("span");
- //设置cell属性
- cell.onmouseout = function() {this.className='mouseOver'; flag=false;};
- cell.onmouseover = function() {this.className='mouseOut'; flag=true;};
- cell.setAttribute("bgcolor","#FFFAFA");
- cell.setAttribute("border","0");
- //cell.setAttribute("onmouseover","setflag()");
- cell.onclick = function() { populateName(this); };
- //将nextNode添加到td
- var txtName = document.createTextNode(nextNode);
- cell.appendChild(txtName);
- //装载隐藏数据到span元素
- row.appendChild(cell);
- nameTableBody.appendChild(row);
- }
- }
- function setOffsets() {
- var end = inputField.offsetWidth;
- var left = calculateOffsetLeft(inputField);
- var top = calculateOffsetTop(inputField) + inputField.offsetHeight;
- completeDiv.style.border = "black 1px solid";
- completeDiv.style.left = left + "px";
- completeDiv.style.top = top + "px";
- nameTable.style.width="400px";
- }
- function calculateOffsetLeft(field) {
- return calculateOffset(field, "offsetLeft");
- }
- function calculateOffsetTop(field) {
- return calculateOffset(field, "offsetTop");
- }
- function calculateOffset(field, attr) {
- var offset = 0;
- while(field) {
- offset += field[attr];
- field = field.offsetParent;
- }
- return offset;
- }
- function populateName(cell) {
- //填充数据到web页面,cell---->td对象
- inputField.value = cell.firstChild.nodeValue;
- clearNames();
- }
- //清除列表数组
- function clearNames() {
- var ind = nameTableBody.childNodes.length;
- for (var i = ind - 1; i >= 0 ; i--) {
- nameTableBody.removeChild(nameTableBody.childNodes[i]);
- }
- completeDiv.style.border = "none";
- }
- </script>
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
- <title>Untitled Document</title>
- </head>
- <body>
- <input name="frmchangshang" class="InputText" id="frmchangshang" style="width:250px;"
- onBlur="DisSelect();" onKeyUp="findNames();" size="50" maxlength="100">
- <span class="style1">提示:输入关键字,程序自动从库中匹配您
- 要找的记录,如果不存在自行填写
- </span>
- <div style="position:absolute;top:0;left:0;" id="popup">
- <table id="name_table" bgcolor="#FFFAFA" border="0" cellspacing="0"
- cellpadding="0">
- <tbody id="name_table_body"></tbody>
- </table>
- </div>
- </body>
- </html>
2.后台search.asp异步查询数据页面
把sql语句和要显示的字段改为自己的数据库相对应格式就可以了。
- <!--#include virtual="conn.asp" -->
- <%
- keyword=request.QueryString("names")
- sql="select lgid,lgmc from lg where lgmc like '%"&keyword&"%' order by lgid desc"
- set rs=server.CreateObject("adodb.recordset")
- rs.open sql,conn,1,1
- Response.ContentType="text/xml"
- response.Write "<?xml version=""1.0"" encoding=""GB2312"" ?>"
- response.Write "<response>"
- do while not rs.eof
- response.Write "<content>"
- response.Write "<name>"&rs("lgmc")&"</name>"
- 'response.Write "<userid>"&rs("userid")&"</userid>"
- 'response.Write "<startime>"&rs("startime")&"</startime>"
- 'response.Write "<endtime>"&rs("endtime")&"</endtime>"
- response.Write "</content>"
- rs.movenext
- loop
- response.Write "</response>"
- rs.close
- set rs=nothing
- %>
以上就是ASP模仿google suggest风格实现下拉菜单效果的代码,希望对大家的学习有所帮助。
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