Code that achieves the same functionality but does not rely on the

I utilized a tutorial to obtain the ajax code below. The tutorial referenced the library jquery.form.js. Here is the code snippet provided:

function onsuccess(response,status){
    $("#onsuccessmsg").html(response);
        alert(response);
    }
    $("#uploadform").on('change',function(){
        var options={
        url     : $(this).attr("action"),
        success : onsuccess
    };
    $(this).ajaxSubmit(options);
        return false;
});

If I prefer not to include jquery.form.js, how can I achieve the equivalent functionality using regular ajax without the library?

Update

I attempted to replace the code with the following:

$("#uploadform").on('change',function(){
                $.ajax({
                    url: $(this).attr("action"),
                    context: document.body,
                    success: function(){
                        $("#onsuccessmsg").html(response);
                        alert("asdf");
                    }
                });
                return false;
            });

However, this revised code does not seem to have any effect at present.

Answer №1

Here is a revised version of the code snippet for handling form submission in jQuery:


$("#uploadform").on('submit',function(e){
    e.preventDefault();
    var formData = new FormData($(this)[0]);

    $.ajax({
        url: $(this).attr("action"),
        context: document.body,
        data: formData, 
        type: "POST",  
        contentType: false,
        processData: false,
        success: function(response, status, jqxhr){
            $("#onsuccessmsg").html(response);
            alert("asdf");
        }
    });
    return false;
});

It's important to note that you will need to manually populate the data object by iterating through the form fields. You can also explore the shortcut method jQuery post for achieving similar functionality.


If you need assistance with retrieving form data using JavaScript or jQuery, you can refer to the following previously answered question:

How can I get form data with Javascript/jQuery?

Remember to set enctype="multipart/form-data" on your form if you are uploading files. Additionally, ensure to include contentType: false and processData: false when submitting the form via AJAX. See this reference post for more information.

The code above has been updated to reflect these requirements.

If this response addresses your query, kindly mark it as the correct answer. Thank you!

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