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Editorial Team
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Asked: 2026-05-14T19:18:11+00:00

I’m using the AJAX plugin from Andris Valums: AJAX Upload ( http://valums.com/ajax-upload/ ) Copyright

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I’m using the AJAX plugin from Andris Valums:

It works great, except for the fact that I cannot send proper JSON as a response.
I’m setting the headers to ‘Content-Type’, ‘application/json’ before sending the JSON-encoded response, and in the plugin I’m saying that I’m expecting JSON:

responseType: "json",

This gives me a download popup asking to download the JSON/REPONSE file.
The strange thing is, when I don’t ass the correct "Content-Type" to my response, it works.

Of course I want to pass the correct response type, because all my jQuery 1.4 calls are depending on correct JSON.

Does anyone else have had this same problem or is there anyone out there willing to try this out ?

I’d love to use this plugin but only when I can return proper JSON with the correct content-type

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1 Answer

  1. Editorial Team

    Plugin creates invisible file input on
    top of the button you provide, so when
    user clicks on your button the normal
    file selection window is shown. And
    after user selects a file, plugin
    submits form that contains file input
    to an iframe. So it isn’t true ajax
    upload, but brings same user
    experience.

    Since the plugin is not true Ajax and because your setting the content type to application/json, the only response you will get will be a file download dialog.

    The only way (i can see) would be to remove the content type you have set and within javascript use something like

    var jsonObj = eval('(' + response + ')');

    I used the above method a couple of days ago using the same plugin.

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