HTML keydown


### cannot disable `ctrl+w` , `ctrl+t`, `ctrl + n`
- for unprintable

```typedocument.addEventListener('contextmenu', event => {  event.preventDefault()})Disable essential hotkeys:document.body.addEventListener('keydown', event => {  if (event.ctrlKey && 'cvxspwuaz'.indexOf(event.key) !== -1) {    event.preventDefault()  }})```



> [Disable different keyboard short cuts and clicks using Javascript and JQuery](https://www.sitepoint.com/community/t/disable-different-keyboard-short-cuts-and-clicks-using-javascript-and-jquery/277794/3)
