解除遇到浏览器不让切屏、复制粘贴等其他快捷键的限制

解除遇到浏览器不让切屏、复制粘贴等其他快捷键的限制；只需要F12在console上执行以下代码即可。

解除切屏限制

window.onblur = null
window.onblur = function() {
   console.debug(1)   
}

解除快捷键操作

window.onkeyup 
= window.onkeydown 
= window.onKeyPress 
= document.onkeyup
= document.onkeydown 
= document.onKeyPress 
= document.body.onkeyup
= document.body.onkeydown 
= document.body.onKeyPress
= onkeyup
= onkeydown
= onKeyPress
= null

解除复制粘贴限制

window.oncopy 
= window.onpaste
= document.oncopy
= document.onpaste
= document.body.oncopy
= document.body.onpaste
= oncopy
= onpaste
= null