cos.uploadFile({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: '1.jpg',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: fileObject, /* Required, uploaded file object, can be the file object obtained after selecting a local file using the input[type="file"] tag */
    SliceSize: 1024 * 1024 * 5,     /* Threshold for triggering multipart upload, files larger than 5 MB will use multipart upload, optional */
    onTaskReady: function(taskId) {                   /* Optional */
          console.log(taskId);
    },
    onProgress: function (progressData) {           /* Optional */
        console.log(JSON.stringify(progressData));
    },
    onFileFinish: function (err, data, options) {   /* Optional */
        console.log(options.Key + ' upload ' + (err ? 'failed' : 'completed'));
    },
    // Custom headers are supported (optional)
    Headers: {
      'x-cos-meta-test': 123
    },
}, function(err, data) {
    console.log(err || data);
});

function(err, data) { ... }

cos.sliceUploadFile({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: '1.jpg',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: fileObject, /* Required, uploaded file object, can be the file object obtained after selecting a local file using the input[type="file"] tag */
    onTaskReady: function(taskId) {                   /* Optional */
          console.log(taskId);
    },
    onHashProgress: function (progressData) {       /* Optional */
        console.log(JSON.stringify(progressData));
    },
    onProgress: function (progressData) {           /* Optional */
        console.log(JSON.stringify(progressData));
    },
    // Custom headers are supported (optional)
    Headers: {
      'x-cos-meta-test': 123
    },
}, function(err, data) {
    console.log(err || data);
});

function(err, data) { ... }

cos.uploadFiles({
    files: [{
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: '1.jpg',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
        Body: fileObject1, /* Required, uploaded file object, can be the file object obtained after selecting a local file using the input[type="file"] tag */
        onTaskReady: function(taskId) {
          /* taskId can be used to cancel the upload with cos.cancelTask(taskId), pause the upload with cos.pauseTask(taskId), or restart the upload with cos.restartTask(taskId) */
          console.log(taskId);
    },
    // Custom headers are supported (optional)
    Headers: {
      'x-cos-meta-test': 123
    },
    }, {
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
        Key: '2.jpg',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
        Body: fileObject2, /* Required, uploaded file object, can be the file object obtained after selecting a local file using the input[type="file"] tag */
        onTaskReady: function(taskId) {
          /* taskId can be used to cancel the upload with cos.cancelTask(taskId), pause the upload with cos.pauseTask(taskId), or restart the upload with cos.restartTask(taskId) */
          console.log(taskId);
    },
    // Custom headers are supported (optional)
    Headers: {
      'x-cos-meta-test': 123
    },
    }],
    SliceSize: 1024 * 1024 * 10,    /* Set to use multipart upload for files larger than 10 MB */
    onProgress: function (info) {
        var percent = parseInt(info.percent * 10000) / 100;
        var speed = parseInt(info.speed / 1024 / 1024 * 100) / 100;
        console.log('Progress: ' + percent + '%; Speed: ' + speed + 'Mb/s;');
    },
    onFileFinish: function (err, data, options) {
        console.log(options.Key + ' upload ' + (err ? 'failed' : 'completed'));
    },
}, function(err, data) {
    console.log(err || data);
});

function(err, data) { ... }

var taskId = 'xxxxx';                   /* Required */
cos.cancelTask(taskId);

var taskId = 'xxxxx';                   /* Required */
cos.pauseTask(taskId);

var taskId = 'xxxxx';                   /* Required */
cos.restartTask(taskId);

cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: '1.jpg',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: fileObject, /* Required, uploaded file object, can be the file object obtained after selecting a local file using the input[type="file"] tag */
    onProgress: function(progressData) {
        console.log(JSON.stringify(progressData));
    }
}, function(err, data) {
    console.log(err || data);
});

cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: '1.txt',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: 'hello!',
}, function(err, data) {
    console.log(err || data);
});

var base64Url = 'data:image/png;base64,iVBORw0KGgo.....';
var dataURLtoBlob = function (dataurl) {
    var arr = dataurl.split(',');
    var mime = arr[0].match(/:(.*?);/)[1];
    var bstr = atob(arr[1]);
    var n = bstr.length;
    var u8arr = new Uint8Array(n);
    while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
    }
    return new Blob([u8arr], { type: mime });
};
// Convert to BLOB for upload
var body = dataURLtoBlob(base64Url);
cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: '1.png',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: body,
}, function(err, data) {
    console.log(err || data);
});

cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: 'a/',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: '',
}, function(err, data) {
    console.log(err || data);
});

cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Enter your own bucket, required field */
    Region: 'COS_REGION',  /* Required field specifying the region where the bucket is located, e.g., ap-beijing */
    Key: 'a/b/1.jpg',  /* The object key stored in the bucket (e.g., 1.jpg, a/b/test.txt), required field */
    Body: fileObject, /* Required, uploaded file object, can be the file object obtained after selecting a local file using the input[type="file"] tag */
    onProgress: function(progressData) {
        console.log(JSON.stringify(progressData));
    }
}, function(err, data) {
    console.log(err || data);
});

cos.putObject({
    Bucket: 'examplebucket-1250000000', /* Required */
    Region: 'ap-beijing',    /* Required */
    Key: 'a',              /* Required */
    Body: 'hello', /* Required */
    // Custom headers are supported (optional)
    Headers: {
      'x-cos-meta-test': 123
    },
}, function(err, data) {
    console.log(err || data);
});