javascript - Why is it that the input box in the project suddenly cannot input text? There is a cursor and the text cannot go up when typing on the keyboard. Can any expert encounter such a problem and ask for a solution?

Question

Why is it that the input box in the project suddenly cannot input text? There is a cursor and the text cannot go up when typing on the keyboard. Can any expert encounter such a problem and ask for a solution?

仅有的幸福 · Answer

Either it crashes, or the input box is restricted.

滿天的星座 · Answer

Maybe your keyboard is broken

巴扎黑 · Answer

Generally, in this case, your input box should be restricted. Take a look at your onchange method

天蓬老师 · Answer

Write a retrun false in the keydown event, you are cheating yourself