jquery - how we make image file dynamic in javascript - 


var file = $("#imgstep"+id)[0].files[0]; var filename = file.name; var filesize = file.size;

i have problem multile files name in 1 function. first time file name other time error on 

var file = $("#imgstep"+id)[0].files[0];

and show cannot read property 'files' of undefined.


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