What should I do if no response is submitted by jquery ajax?

One of the reasons that cause no response to jquery ajax submission is that there is a problem with our ajax parameters, and the other is jquery in IE. in form, ajax sets the submission type to application/x-expose Crip. The following is a summary.

Example 1

The Code is as follows:
$. Ajax ( { Type: "POST ", Url: "/a. php ", Success: function (result ){ // ToDo: } )

When we click submit, no results are returned, so no results are found in the test using the ff browser. Later, we found that the data: "{a: 'A'}" parameter is missing, we only need to modify it.

The Code is as follows:
$. Ajax ( { Type: "POST ", ContentType: "application/json ", Url: "a. php ", Data: "{a: 'A '}", Success: function (result ){ } )

Ajax submission in jquery. form in E in ie8 does not respond.

I analyzed this problem for several hours and found that I set application/x-javascript, and ie8 won't work anymore, the solution is to set other parameters or not to set them during ajax submission.