Jquery returns json data and prompts a download error in IE browser.

Today, when Jquery returns json data, the IE browser prompts you to download the data. After the data is submitted, the returned data is originally json data. The test is normal in the spark, but IE always prompts you to save the data, I searched for the content on the Internet. Most of them set ContentType to "text/xml" and tested it myself. The returned value is undefined,

Original Return Value Setting: context. Response. ContentType = "application/json ";

Attempt: context. Response. ContentType = "text/xml;"; failed

Later I tried: context. Response. ContentType = "text/plain; charset = UTF-8 ";

Successful!