Home Web Front-end JS Tutorial Ajax and iframe framework implement image file upload (detailed graphic and text explanation)

Ajax and iframe framework implement image file upload (detailed graphic and text explanation)

Apr 04, 2018 pm 04:40 PM
ajax iframe picture

This time I will bring you the ajax and iframe framework to implement picture File upload (detailed picture and text explanation), the notes of ajax and iframe framework to implement image file upload, what are the following? This is a practical case, let’s take a look at it.

You should be able to cite several commonly used ways to implement the asynchronous file upload function. The more frequently used methods are native ajax and iframe frameworks to achieve image file upload. Below, I will share with you two ways to upload image files. One way: native ajax and iframe framework, for your reference, the specific content is as follows

Method 1: Use the iframe framework to upload images

html code is as follows:

<p class="frm">
<form name="uploadFrom" id="uploadFrom" action="upload.php" method="post" target="tarframe" enctype="multipart/form-data">
<input type="file" id="upload_file" name="upfile">
</form>
<iframe src="" width="0" height="0" style="display:none;" name="tarframe"></iframe>
</p>
<p id="msg">
</p>
Copy after login

index.js file:

$(function(){
$("#upload_file").change(function(){
$("#uploadFrom").submit();
});
});
function stopSend(str){
var im="<img src=&#39;upload/images/"+str+"&#39;>";
$("#msg").append(im);
}
Copy after login

upload.php file:

<php
$file=$_FILES[&#39;upfile&#39;];
$name=rand(0,500000).dechex(rand(0,10000)).".jpg";
move_uploaded_file($file[&#39;tmp_name&#39;],"upload/images/".$name);
//调用iframe父窗口的js 函数
echo "<script>parent.stopSend('$name')</script>";
?>
Copy after login

Method 2: Original ajax file upload

<!DOCTYPE html>
<html>
<head>
<title>Html5 Ajax 上传文件</title>
<meta charset="utf-8">
<script type="text/javascript">
var xhr;
function createXMLHttpRequest()
{
if(window.ActiveXObject)
{
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest)
{
xhr = new XMLHttpRequest();
}
}
function UpladFile()
{
var fileObj = document.getElementById("file").files[0];
var FileController = 'upload.php';
var form = new FormData();
form.append("myfile", fileObj);
createXMLHttpRequest();
xhr.onreadystatechange = handleStateChange;
xhr.open("post", FileController, true);
xhr.send(form);
}
function handleStateChange()
{
if(xhr.readyState == 4)
{
if (xhr.status == 200 || xhr.status == 0)
{
var result = xhr.responseText;
var json = eval("(" + result + ")");
alert('图片链接:n'+json.file);
}
}
}
</script>
<style>
.txt{ height:28px; border:1px solid #cdcdcd; width:670px;}
.mybtn{ background-color:#FFF; line-height:14px;vertical-align:middle;border:1px solid #CDCDCD;height:30px; width:70px;}
.file{ position:absolute; top:0; right:80px; height:24px; filter:alpha(opacity:0);opacity: 0;width:260px }
</style>
</head>
<body>
<p class="form-group">
<label class="control-label">图片</label>
<br/>
<input type=&#39;text&#39; name=&#39;textfield&#39; id=&#39;textfield&#39; class=&#39;txt&#39; />
<span onclick="file.click()" class="mybtn">浏览...</span>
<input type="file" name="file" class="file" id="file" size="28" onchange="document.getElementById(&#39;textfield&#39;).value=this.value" />
<span onclick="UpladFile()" class="mybtn">上传</span>
</p>
</body>
</html>
Copy after login

php code :

<?php
if(isset($_FILES["myfile"]))
{
$ret = array();
$uploadDir = &#39;images&#39;.DIRECTORY_SEPARATOR.date("Ymd").DIRECTORY_SEPARATOR;
$dir = dirname(FILE).DIRECTORY_SEPARATOR.$uploadDir;
file_exists($dir) || (mkdir($dir,0777,true) && chmod($dir,0777));
if(!is_array($_FILES["myfile"]["name"])) //single file
{
$fileName = time().uniqid().&#39;.&#39;.pathinfo($_FILES["myfile"]["name"])[&#39;extension&#39;];
move_uploaded_file($_FILES["myfile"]["tmp_name"],$dir.$fileName);
$ret[&#39;file&#39;] = DIRECTORY_SEPARATOR.$uploadDir.$fileName;
}
echo json_encode($ret);
}
?>
Copy after login

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Ajax verification user name (detailed graphic and text explanation)

How to improve user experience beforeSend

The above is the detailed content of Ajax and iframe framework implement image file upload (detailed graphic and text explanation). For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? Where is the automatically saved image when posting? How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? Where is the automatically saved image when posting? Mar 22, 2024 am 08:06 AM

With the continuous development of social media, Xiaohongshu has become a platform for more and more young people to share their lives and discover beautiful things. Many users are troubled by auto-save issues when posting images. So, how to solve this problem? 1. How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? 1. Clear the cache First, we can try to clear the cache data of Xiaohongshu. The steps are as follows: (1) Open Xiaohongshu and click the &quot;My&quot; button in the lower right corner; (2) On the personal center page, find &quot;Settings&quot; and click it; (3) Scroll down and find the &quot;Clear Cache&quot; option. Click OK. After clearing the cache, re-enter Xiaohongshu and try to post pictures to see if the automatic saving problem is solved. 2. Update the Xiaohongshu version to ensure that your Xiaohongshu

How to post pictures in TikTok comments? Where is the entrance to the pictures in the comment area? How to post pictures in TikTok comments? Where is the entrance to the pictures in the comment area? Mar 21, 2024 pm 09:12 PM

With the popularity of Douyin short videos, user interactions in the comment area have become more colorful. Some users wish to share images in comments to better express their opinions or emotions. So, how to post pictures in TikTok comments? This article will answer this question in detail and provide you with some related tips and precautions. 1. How to post pictures in Douyin comments? 1. Open Douyin: First, you need to open Douyin APP and log in to your account. 2. Find the comment area: When browsing or posting a short video, find the place where you want to comment and click the &quot;Comment&quot; button. 3. Enter your comment content: Enter your comment content in the comment area. 4. Choose to send a picture: In the interface for entering comment content, you will see a &quot;picture&quot; button or a &quot;+&quot; button, click

6 Ways to Make Pictures Sharper on iPhone 6 Ways to Make Pictures Sharper on iPhone Mar 04, 2024 pm 06:25 PM

Apple's recent iPhones capture memories with crisp detail, saturation and brightness. But sometimes, you may encounter some issues that may cause the image to look less clear. While autofocus on iPhone cameras has come a long way, allowing you to take photos quickly, the camera can mistakenly focus on the wrong subject in certain situations, making the photo blurry in unwanted areas. If your photos on your iPhone look out of focus or lack sharpness overall, the following post should help you make them sharper. How to Make Pictures Clearer on iPhone [6 Methods] You can try using the native Photos app to clean up your photos. If you want more features and options

How to make ppt pictures appear one by one How to make ppt pictures appear one by one Mar 25, 2024 pm 04:00 PM

In PowerPoint, it is a common technique to display pictures one by one, which can be achieved by setting animation effects. This guide details the steps to implement this technique, including basic setup, image insertion, adding animation, and adjusting animation order and timing. Additionally, advanced settings and adjustments are provided, such as using triggers, adjusting animation speed and order, and previewing animation effects. By following these steps and tips, users can easily set up pictures to appear one after another in PowerPoint, thereby enhancing the visual impact of the presentation and grabbing the attention of the audience.

What should I do if the images on the webpage cannot be loaded? 6 solutions What should I do if the images on the webpage cannot be loaded? 6 solutions Mar 15, 2024 am 10:30 AM

Some netizens found that when they opened the browser web page, the pictures on the web page could not be loaded for a long time. What happened? I checked that the network is normal, so where is the problem? The editor below will introduce to you six solutions to the problem that web page images cannot be loaded. Web page images cannot be loaded: 1. Internet speed problem The web page cannot display images. It may be because the computer's Internet speed is relatively slow and there are more softwares opened on the computer. And the images we access are relatively large, which may be due to loading timeout. As a result, the picture cannot be displayed. You can turn off the software that consumes more network speed. You can go to the task manager to check. 2. Too many visitors. If the webpage cannot display pictures, it may be because the webpages we visited were visited at the same time.

How to convert pdf documents into jpg images with Foxit PDF Reader - How to convert pdf documents into jpg images with Foxit PDF Reader How to convert pdf documents into jpg images with Foxit PDF Reader - How to convert pdf documents into jpg images with Foxit PDF Reader Mar 04, 2024 pm 05:49 PM

Are you also using Foxit PDF Reader software? So do you know how Foxit PDF Reader converts pdf documents into jpg images? The following article brings you how Foxit PDF Reader converts pdf documents into jpg images. For those who are interested in the method of converting jpg images, please come and take a look below. First start Foxit PDF Reader, then find "Features" on the top toolbar, and then select the "PDF to Others" function. Next, open a web page called "Foxit PDF Online Conversion". Click the "Login" button on the upper right side of the page to log in, and then turn on the "PDF to Image" function. Then click the upload button and add the pdf file you want to convert into an image. After adding it, click "Start Conversion"

How to arrange two pictures side by side in wps document How to arrange two pictures side by side in wps document Mar 20, 2024 pm 04:00 PM

When using WPS office software, we found that not only one form is used, tables and pictures can be added to the text, pictures can also be added to the table, etc. These are all used together to make the content of the entire document look richer. , if you need to insert two pictures into the document and they need to be arranged side by side. Our next course can solve this problem: how to place two pictures side by side in a wps document. 1. First, you need to open the WPS software and find the picture you want to adjust. Left-click the picture and a menu bar will pop up, select &quot;Page Layout&quot;. 2. Select &quot;Tight wrapping&quot; in text wrapping. 3. After all the pictures you need are confirmed to be set to &quot;Tight text wrapping&quot;, you can drag the pictures to the appropriate position and click on the first picture.

How to solve the 403 error encountered by jQuery AJAX request How to solve the 403 error encountered by jQuery AJAX request Feb 20, 2024 am 10:07 AM

Title: Methods and code examples to resolve 403 errors in jQuery AJAX requests. The 403 error refers to a request that the server prohibits access to a resource. This error usually occurs because the request lacks permissions or is rejected by the server. When making jQueryAJAX requests, you sometimes encounter this situation. This article will introduce how to solve this problem and provide code examples. Solution: Check permissions: First ensure that the requested URL address is correct and verify that you have sufficient permissions to access the resource.

See all articles