How to preview image before submit

Question

0.00/5 (No votes)

See more:

JavaScript

$(function(){
    Test = {
        UpdatePreview: function(obj){
          // if IE < 10 doesn't support FileReader
          if(!window.FileReader){
             // don't know how to proceed to assign src to image tag
          } else {
             var reader = new FileReader();
             var target = null;

             reader.onload = function(e) {
              target =  e.target || e.srcElement;
             $("#ImageId").attr("src", target.result);
			 };
              reader.readAsDataURL(obj.files[0]);
          }
        }
    };
});

my html code..............

What I have tried:

the above code is what i have try but the image is not show at all

Posted 9-Aug-20 1:12am

Ibrahim Hassan 1234

Updated 10-Aug-20 0:24am

Richard Deeming

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sandeep Mewara · Accepted Answer · 2020-08-09T03:04:00

Use the JavaScript readAsDataURL() Method.

Refer: How to Preview an Image Before it is Uploaded Using jQuery[^]
Here, try this:

HTML

<!DOCTYPE html>
    <html lang="en">
    <head>
    <meta charset="utf-8">
    <title>jQuery Preview an Image Before it is Uploaded</title>
    <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
    <script>

        function previewFile(input){
            var file = $("input[type=file]").get(0).files[0];
            if(file){
                var reader = new FileReader();
                reader.onload = function(){
                    $("#previewImg").attr("src", reader.result);
                }
     
                reader.readAsDataURL(file);
            }
        }
    </script>
    </head> 
    <body>
        <form action="confirmation.php" method="post">
            <p>
                <input type="file" name="photo" onchange="previewFile(this);" required>
            </p>
            <img id="previewImg" src="/examples/images/transparent.png" alt="Placeholder">
            <p>
                <input type="submit" value="Submit">
            </p>
        </form>
    </body>
    </html>