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Ajax demo -- operate a text file

Source: Internet
Author: User
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<Script language = "JavaScript">
// Create Ajax
Function initxmlhttp ()
{
VaR XMLHTTP
Try {
XMLHTTP = new activexobject ("msxml2.xmlhttp ");
} Catch (e ){
Try {
XMLHTTP = new activexobject ("Microsoft. XMLHTTP ");
} Catch (e ){
XMLHTTP = false;
}
}
If (! XMLHTTP & typeof XMLHttpRequest! = 'Undefined '){
Try {
XMLHTTP = new XMLHttpRequest ();
} Catch (e ){
XMLHTTP = false;
}
}
If (! XMLHTTP & window. createrequest ){
Try {
XMLHTTP = Window. createrequest ();
} Catch (e ){
XMLHTTP = false;
}
}
Return XMLHTTP;
}
// Read and display a file from a text file
Function readtext ()
{
VaR readbutton = Document. getelementbyid ('read ');
VaR showcontent = Document. getelementbyid ('content ');
Readbutton. Disabled = "disabled ";
Showcontent. innerhtml = 'reading, loading .....';
VaR XMLHTTP = initxmlhttp ();
VaR url = "operation. php? Action = read ";
XMLHTTP. Open ("get", URL, true );
XMLHTTP. onreadystatechange = function (){
If (XMLHTTP. readystate = 4 & XMLHTTP. Status = 200)
{
Showcontent. innerhtml = XMLHTTP. responsetext;
Readbutton. Disabled = "";
Document. getelementbyid ('edit'). Disabled = "";
}
}
XMLHTTP. Send (null );
}
// Switch to edit mode
Function edit ()
{
Document. getelementbyid ('edit'). Disabled = "disabled ";
VaR STR = '';
STR + = '<textarea name = "textcontent" Cols = "50" rows = "8" id = "textcontent"> ';
STR + = '</textarea> ';
Document. getelementbyid ('content'). innerhtml = STR;
Document. getelementbyid ('update'). Disabled = "";
}
// Update data to a text file
Function Update ()
{
VaR XMLHTTP = initxmlhttp ();
VaR url = "operation. php? Action = write ";
VaR DATA = "content =" + document. All. textcontent. value;
XMLHTTP. Open ("Post", URL, true );
XMLHTTP. setRequestHeader ("Content-Type", "application/X-WWW-form-urlencoded ");
XMLHTTP. Send (data );
XMLHTTP. onreadystatechange = function (){
If (XMLHTTP. readystate = 4 & XMLHTTP. Status = 200)
{
Document. getelementbyid ('content'). innerhtml = XMLHTTP. responsetext;
Document. getelementbyid ('update'). Disabled = "disabled ";
}
}
}
</SCRIPT>
<Body>
<Div class = "Main-box">
<Div class = "head-Dark-box"> Ajax demo -- operate a text file </div>
<Div class = "body-box">
<Div class = "Tip-MSG"> A simple Ajax demo. Main functions: <br/>
1. Read and display text files. <Br/>
2. Update a text file.
</Div>
<Div class = "alt-table"> <br/>
<Input id = "read" name = "read" type = "button" class = "button" value = "read" onclick = "readtext ()"/>
<Input id = "edit" Disabled = "disabled" name = "edit" type = "button" class = "button" value = "edit" onclick = "Edit () "/>
<Input id = "Update" Disabled = "disabled" name = "Update" type = "button" class = "button" value = "Update" onclick = "Update () "/>
<Div id = "content" class = "textbox-title"> </div>
</Div>
</Div>
<Div id = "Copyright" class = "foot-SQL"> copyright @ 2006 <a href = "http://www.phpobject.net"> www.phpobject.net </a>! </Div>
</Div>
</Body>

The following is ASP code:
<%
Set FSO = server. Createobject ("scripting. FileSystemObject ")

If request. querystring ("action") = "read" then
Set txtfile = FSO. opentextfile (server. mappath ("demo.txt "))
Response. Write "Response. Write "<HR width = '000000' color = '# cc9999'>"
Response. Write "<PRE>"
While not txtfile. atendofstream
Response. Write txtfile. Readline & "<br>"
Wend
Response. Write "<PRE>"
Else
Set txtfile = FSO. opentextfile (server. mappath ("demo.txt"), 2, true)
Txtfile. writeline request ("content ")
End if
Txtfile. Close
%>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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