js代码

<script src="javascript/cropbox.js"></script>
<script type="text/javascript">
    window.onload = function() {
        var options =
        {
            imageBox: '.imageBox',
            thumbBox: '.thumbBox',
            spinner: '.spinner',
            imgSrc: 'tx.png'
        }
        var cropper = new cropbox(options);
        document.querySelector('#file').addEventListener('change', function(){
            var reader = new FileReader();
            reader.onload = function(e) {
                options.imgSrc = e.target.result;
                cropper = new cropbox(options);
            }
            reader.readAsDataURL(this.files[0]);
            this.files = [];
        })
        document.querySelector('#btnCrop').addEventListener('click', function(){
            var img = cropper.getDataURL();
            document.querySelector('.cropped').innerHTML += '<img src="'+img+'">';
        })
        document.querySelector('#btnZoomIn').addEventListener('click', function(){
            cropper.zoomIn();
        })
        document.querySelector('#btnZoomOut').addEventListener('click', function(){
            cropper.zoomOut();
        })
    };
</script>