The page is infected with JavaScript embedded in CSS.

I wrote a CSS embedded Javascript expression. In this case, the single-line text input box is blocked from submitting by carriage return. The result is a list with many submit entries, and the page cannot respond when it is opened. After checking for half a day, it turns out that the expressions you have written have caused a lot of trouble. If you delete the expressions, the results will be quickly reflected:

Input {readonly: expression (this. type = "text" & this. onkeydown = NULL )? (This. onkeydown = function () {If (event. keycode = 13) event. returnvalue = false }):"");}

It seems that CSS expressions can be lazy, but they are still abuse of many pages of form objects. Will it be better to try other solutions, such as binding to a class or something. I did not try it. I should write down this question first.