It may be a browser problem. Download chrome browser, click the download button after installation, and the download is successful. The reason is that the original version of IE browser is too low, and those browsers with IE as the core (such as 360 browser) also have the same problem.

Csdn is a service platform company for IT project outsourcing, IT talent recruitment information and IT technology.

1, SDN focuses on providing an integrated information dissemination and service platform for IT professionals and IT enterprises. CSDN is a professional IT technology community, which has formed a business model of website, magazine, books, e-commerce, enterprise service, education and training.

2.CSDN can also be used for learning. It is an online learning platform in itself. It can not only learn many basic things, but also learn some advanced knowledge. You can also answer questions online to consolidate your knowledge and improve your ability to write code.