[Solved] how to disable button on change using jquery

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you can do this as am assuming a image and am checking the resolutions and then i disable or enable the button as per requirements and also am clearing selected
image so user can’t upload the wrong format .

<script>




    var _URL = window.URL || window.webkitURL;

                                    $("#file").change(function (e) {
                                        var file, img;


                                        if ((file = this.files[0])) {
                                            img = new Image();
                                            img.onload = function () {
                                                //alert(this.width + " " + this.height);
                                                var widthofimage = this.width;
                                                var heightofimage = this.height;

                                                if (widthofimage < 1920 && heightofimage < 850 || widthofimage != 1920 && heightofimage != 850 || widthofimage > 1920 && heightofimage > 850) {
                                                    swal({
                                                        title: "Please review",
                                                        text: "Please Upload Image of 1920 X 850",
                                                        icon: "error",
                                                    });

                                                    document.getElementById("file").value = "";
                                                } else {

                                                    $('input[type="submit"]').removeAttr('disabled');

                                                }

                                            };
                                            img.onerror = function () {
                                                alert("not a valid file: " + file.type);
                                            };
                                            img.src = _URL.createObjectURL(file);


                                        }

                                    });






</script>

solved how to disable button on change using jquery