随着Ajax的运用越来越广泛,越来越多的用户体验被提升,在Domino中应用Ajax实现Google搜索提示效果,在用户的使用过程中也是一种很实用的体验,下面将详细介绍下实现的思路和方法,仅供参考,以下代码在Domino6.5和ie 6中正常运行通过,效果如下图。
1,在表单中创建字段(域),且命名为Google,并在域的
onkeyup时间中加入以下代码:
Code
var google=document.all.Google.value;
if (event.keyCode == 38|event.keyCode == 40)
return
else
{
if (google=="")
document.getElementById("myend").style.display="none";
else
{
document.getElementById("myend").style.display="block";
LoadReadAppraise() //调用Ajax函数
}
}2,在Google域的后面加入以下元素,并内置html:<div id="myend" style="border:groove;width:300;display:none;position:absolute"></div>,用于放置搜索提示内容
3,在表单的前面加入以下代码,并内置html:
<script>
var asKey="";
var currentSelect=-1;
document.onkeydown=viewEvent;
document.onclick=displayall; //单击页面其他地方时,提示消失,与event.cancelBubble=true结合使用
</script>
4,在Google域的onclick时间中加入以下代码:event.cancelBubble=true; //点击该域时提示不消失
5,在表单的jsheader;里面加入以下代码:
Code
var request;
function LoadReadAppraise() //Ajax函数,调用代理,并接受代理返回数据
{
var key=document.all.Google.value;
var rand=Math.random()*100000;
request = new ActiveXObject("Msxml2.XMLHTTP")
if (!request){
request=new ActiveXObject("Microsoft.XMLHTTP");}
request.onreadystatechange=BackAppraise; //设定回调函数
var url=服务器/数据库.nsf/代理名?Openagent&keyword="+key+"&rand="+rand; //rand是保证浏览器缓存不起作用
request.open("get",url,true);
request.send(null);
}
function BackAppraise()
{
if (request.readystate==4){
if (request.status==200){
var obj=request.responseXML.documentElement.getElementsByTagName('first'); //代理返回的是xml格式数据,进行提取
var objs=request.responseXML.documentElement.getElementsByTagName('second');
var flag=obj[0].firstChild.data;
var list=""
for(var i=0;i<obj.length;i++)
{
var s="<div align='right'><font color='green'>"+objs[i].firstChild.data+"结果</font></div>";
list=list+"<div style='cursor:hand;width:100%' onclick='mouseclick(this)' onmouseover='mousemove(this)' onmouseout='mouseout(this)' values='"+obj[i].firstChild.data+"'>"+obj[i].firstChild.data+s+"</div>";
}
list=list+"";
$("#myend").html(list);
}
}
}
function viewEvent(e) // Google域的上下键事件,可以实现提示的切换
{
if (event.keyCode == 38)
{
currentSelect--;
changeItem(true);
};
if (event.keyCode == 40)
{
currentSelect++;
changeItem(true);
} };
function changeItem(o) //实现提示的切换
{
var it = document.getElementById("myend");
if(it.childNodes.length!=1)
{
for (var i=0;i<it.childNodes.length;i++)
{
it.childNodes[i].style.backgroundColor = "";
}
if (currentSelect < -1)
currentSelect= it.childNodes.length - 2;
if (currentSelect== it.childNodes.length-1)
currentSelect= -1;
if (currentSelect< 0)
{
document.getElementById("Google").value = asKey;
}
else
{
it.childNodes[currentSelect].style.backgroundColor = "#DDDDDD";
if (o)
document.getElementById("Google").value = it.childNodes[currentSelect].values;
}
document.getElementById("Google").focus();
}
else
{
it.childNodes[0].style.backgroundColor = "#DDDDDD";
document.getElementById("Google").value = it.childNodes[0].values;
}
}
function mousemove(obj) //提示的鼠标事件
{
obj.style.backgroundColor='#DDDDDD'
}
function mouseout(obj) //提示的鼠标事件
{
obj.style.backgroundColor='white'
}
function mouseclick(obj) //提示的鼠标事件
{
document.all.Google.value=obj.values;
event.cancelBubble=true; //点击选中提示,所有提示不消失
}
function displayall()
{
document.getElementById('myend').style.display='none';
}
6,表单的html首页内容里,加入以下代码:"<script type=\"text/javascript\" src=\"jquery.js\"></script>",调用jQuery,次jQuery的js文件存储在该数据库的共享资源的文件当中。
7,创建代理,命名为GoogleSearch,代码如下:
Code
Sub Initialize
Dim Session As New NotesSession
Dim db As NotesDatabase
Dim view As NotesView
Dim doc As NotesDocument
Dim cgi As NotesDocument
Dim docs As NotesDocumentCollection
Set cgi = Session.DocumentContext
Set db=Session.CurrentDatabase
Dim key As String
key= GetParameter("keyword",cgi.GetItemValue("Query_String_Decoded")(0)) 'GetParameter函数的作用是获取url中&keyword=的值
Set view = db.GetView("视图名")
Dim formalue As String
formalue={Form = "文档的表单名" & @contains(name;"}+Trim(key)+{")} 'name为查询文档的一个域
Set docs=db.Search(formalue,Nothing,0)
Print "Content-type: text/xml" '输出xml文件的表头
Print |<?xml version="1.0" encoding="GB2312" ?> |
Print "<result>"
If docs.Count<>0 Then
Dim words() As String
Dim i As Integer
i=1
Set doc=docs.GetFirstDocument()
While Not doc Is Nothing
words(i)=doc.name(0) 'name为查询文档的一个域,此处可根据具体情况而定
i=i+1
Set doc=docs.GetNextDocument(doc)
Wend
Dim x As Variant
x=Arrayunique(words) '去掉数组中的重复值
Dim cols As NotesDocumentCollection
Dim malue As String
Forall one In x
If one<> "" Then
malue={Form = "文档的表单名" & @contains(name;"}+Trim(one)+{")}
Set cols=db.Search(malue,Nothing,0)
Print "<first>" 'print出xml文件的格式,格式可根据自己的喜好更改
Print one
Print "</first>"
Print "<second>"
Print Cstr(cols.Count)
Print "</second>"
End If
End Forall
Else
Print "<first>"
Print key
Print "</first>"
Print "<second>"
Print "0"
Print "</second>"
End If
Print "</result>"
End Sub
上面的代码只是为了粗略的实现Google搜索提示的效果,在真正的使用这种效果的时候代理查询要更复杂,前台展示的效果要更细腻,由于代码写的比较仓促,以致根本来不及估计编码规范,看得懂就好。
来源:https://www.cnblogs.com/haitunzhilian/archive/2009/10/16/1584795.html