(Reuters) -Chinese e-commerce group JD.com missed market estimates for quarterly revenue on Thursday, as a persistent slowdown in the world's second-largest economy pressured consumers to keep a tight hold on their purse strings.

Alibaba Group Holding missed analysts' estimates for quarterly sales on Friday, as lingering economic uncertainty sapped consumer spending in China and weighed on the e-commerce giant's domestic business.

Alibaba, the Chinese e-commerce giant, fell short of analysts' profit and revenue expectations for the second quarter. The company's performance was hampered by a decline in consumer spending in China and increased competition from discount retailers.