屏蔽ctrl/shift + R/F5

屏蔽ctrl/shift R/F5

There is no nutrition in the blog content. After reading it, you will not only suffer from malnutrition, but also impotence.
The blog content is all parallel goods. Those who are worried about being cheated should leave quickly.

1.  
   // 屏蔽ctrl/shift R/F5
2.  
   document.onkeydown = function () {
3.  
   var shiftCode = 82,
4.  
   ctrlCode = 116,
5.  
   disableCode = [shiftCode, ctrlCode],
6.  
   winEvent = window.event;
7.  
   if ((winEvent.shiftKey || winEvent.ctrlKey)
8.  
   && disableCode.indexOf(winEvent.keyCode) >= 0
9.  
   && !(winEvent.shiftKey && !winEvent.ctrlKey && winEvent.keyCode === shiftCode)) { // 单独放开 shift r
10.  
    event.returnValue = false;
11.  
    }
12.  
    };
13.  
    }

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