Jigum,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
</style>
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.2.2/cropper.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.2.2/cropper.min.js"></script>
<script>
window.addEventListener('load', function() {
var image = document.getElementById('image');
var cropper = new Cropper(image, {
crop: function(e) {
var cropper = this.cropper;
console.log(cropper.getCropBoxData());
},
ready: function() {
var cropper = this.cropper;
console.log(cropper.getCropBoxData());
setTimeout(function() {
cropper.setCropBoxData({left: 100, top : 200, width : 300, height: 50});
}, 1000)
}
});
});
</script>
</head>
<body>
<img id="image" src="https://fengyuanchen.github.io/cropperjs/images/picture.jpg" />
</body>
</html>