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I am trying to grab the file size, of a selected file, before a user submits the form. I am trying to use JQuery to do this so that I can prevent form submission if the file size is too big. But I can't get my code to work right.

My Jquery on form submit:

var size = $("photo-input")[0].files[0].size;

What could I be doing wrong?

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You should prefix #, assuming you want to select on the basis of ID

 var size = $("#photo-input")[0].files[0].size;

HTML has no element as photo-input

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