What you enter in a particular form is not preserved

For example, what you type on Stackoverflow.com's search engine is preserved.

https://stackoverflow.com/questions/tagged/javascript

  document.addEventListener('keydown', (e) => {  if (e.ctrlKey && e.shiftKey && e.key == 'F') { // F = 70      let target = document.querySelector("#search > div > input");      target.value = 'America';      target.focus();  }  });  

However, not all text areas and forms seem to be preserved.

For example, in a search engine on another Q & A site:

document.addEventListener('keydown', (e) => {        if (e.ctrlKey && e.shiftKey && e.key == 'F') { // F = 70            let target = document.querySelector(".SearchBox_searchBox__inputBoxInput__nf3fq");          target.value = 'America';          target.focus();      }  });  

https://chiebukuro.yahoo.co.jp/search?p=&fr=common-navi

If you do not enter the space key etc. at the end after entering it, it will be erased.

If you press the ENTER key after typing to search, the characters you typed will be erased or remain.

I want to know the cause when it is erased.

What is the cause?

Is there a solution?

https://stackoverflow.com/questions/67051358/what-you-enter-in-a-particular-form-is-not-preserved April 12, 2021 at 08:28AM