How jquery implements ajax technology 2: $.post()

In "How jquery implements ajax technology 1: $.ajax()" we have learned how to use jQuery's $.ajax() function to achieve ajax development needs. But compared to some other functions, the implementation process and code amount of $.ajax() are still relatively complicated.
Today we will learn about jQuery’s $.post() function. Compared with the $.ajax() function, the $.post() function is simpler and more convenient, but it can only submit data parameters to the PHP file you need to access virtually through POST.
Let’s first take a look at the parameters in the $.post() function:
$.post(url,data,callback,type)
url---The URL address of the page to be loaded.
data---Key / value parameters to be sent.
callback---Callback function when loading is successful.
type---Return content format, xml, html, script, json, text, _default.
Here is a practical example:
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ajax.html