Home > Developer > Ajax

Using IFRAME to simulate Ajax submission instance in JS

Source: Internet
Author: User
Tags file upload
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

HTML page code

The code is as follows Copy Code

<iframe name= "iframe" style= "Display:none" ></iframe>
<form action= "action.php" method= "post" enctype= "Multipart/form-data" target= "iframe" >
</form>

function Errors (msg)
{
Alert (msg);
}


action.php page

The code is as follows Copy Code

if ($input = = ") {
echo "<script>parent.errors (' this is a test!!! ');</script> ";
Exit
}


So that when we submit it will pop up this is a test!!! And if you want to have a nice pop-up layer effect we can put

function Errors (msg)
{
Alert (msg);
}

function into the JS pop-up layer can be.


example, using IFRAME imitate Ajax file upload

HTML page

The code is as follows Copy Code
<body>
<form action= "upload.jsp" id= "Form1" Name= "Form1" enctype=
Data "method=" POST "target=" Hidden_frame ">
<input type= "File" id= "file" name= "file" style= "width:450" >
<inputtype= "Submit" value= "Upload file" >
</form>
<iframe name= "Hidden_frame" id= "Hidden_frame" style= "Display:none" ></iframe><span id= "MSG" ></ Span>
</body>
<script type= "Text/javascript" >
function Callback (MSG)
{
document.getElementById ("file"). outerHTML = document.getElementById ("file"). outerHTML;
document.getElementById ("msg"). InnerHTML = "<font color=red>" +msg+ "</font>";
}
</script>

JS Processing page

The code is as follows Copy Code

<%@ page language= "java" contenttype= "text/html; charset=gb2312 "%>
<%@ page import= "Com.jspsmart.upload.SmartUpload"%>
<%
Create a new Smartupload object
Smartupload su = new Smartupload ();
Upload initialization
Su.initialize (PageContext);
Set upload limit
1. Limit the maximum length of each uploaded file.
Su.setmaxfilesize (10000000);
2. Limit the length of the total upload data.
Su.settotalmaxfilesize (20000000);
3. Set the file allowed to upload (by extension limit), only allow doc,txt files.
Su.setallowedfileslist ("Doc,txt,jpg,rar,mid,waw,mp3,gif");
Boolean sign = true;
4. Set the file that prohibits uploading (by extension limit), prohibit uploading files with exe,bat,jsp,htm,html extensions and files with no extension.
try {
Su.setdeniedfileslist ("exe,bat,jsp,htm,html");

Uploading files
Su.upload ();
Save the uploaded file to the specified directory
Su.save ("C:\");
catch (Exception e) {
E.printstacktrace ();
sign = false;
}
if (sign==true)
{
Out.println ("<script>parent.callback (' Upload file Success ') </script>");
}
Else
{
Out.println ("<script>parent.callback (' Upload file error ') </script>");
}
%>

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:
how to use javascript variable in php using ajax how to get data from database using ajax in struts2 multiple file upload in php using ajax simulate traffic to website send data from javascript to php using ajax how to make website using node js call php function using ajax
Related Article
JQuery AJAX Timeout Timeout problem detailed _jquery
The difference between traditional web development patterns a...
JQuery ajax File Download _ajax
Ajax various implementation methods compare _ajax
Ajax Getting Started Guide (ii)
SPRINGMVC passing a parameter list object through Ajax or pas...

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More