`method _type : Js_of_ocaml__.Js.js_string Js_of_ocaml__.Js.t Js_of_ocaml__.Js.readonly_prop`
`method target : 'a Js_of_ocaml__.Js.t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`
`method currentTarget : 'a Js_of_ocaml__.Js.t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`
`method preventDefault : unit Js_of_ocaml__.Js.meth`
`method srcElement : 'a Js_of_ocaml__.Js.t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`