如何获得Hight和Width图像javascript

        function readImage(inputFiles,$input){
            if(inputFiles == undefined || inputFiles.length == 0) return;

            var inputFile = inputFiles[0];

            var reader = new FileReader();

            reader.readAsDataURL(inputFile);

            reader.onload = function(event) {

                $input.attr("src", event.target.result);

            var image = new Image();
            image.src = event.target.result;
            image.onload = function() {
                console.log('height: ' + this.height); ** <=== this * **
                console.log('width: ' + this.width);   ** <=== and this * **
            };

            };
        }
        function readImage(inputFiles,$input){