Can't use forEach with Filelist

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A FileList is not an Array, but it does conform to its contract (has length and numeric indices), so we can "borrow" Array methods:

Array.prototype.forEach.call(field.photo.files, function(file) { ... });

Since you're obviously using ES6, you could also make it a proper Array, using the new Array.from method:

Array.from(field.photo.files).forEach(file => { ... });

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You can also iterate with a simple for:

var files = field.photo.files;for (var i = 0; i < files.length; i++) {    console.log(files[i]);}

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In ES6 you can use:

[...field.photo.files].forEach(file => console.log(file));

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