$(document).on('keydown',function(e){
e = e.event || window.event;
if(e.keyCode == 123 || (e.ctrlKey&&e.shiftKey&&e.keyCode==73) || (e.ctrlKey&&e.keyCode==85)) return false
})
$(document).on('keydown',function(e){
e = e.event || window.event;
if(e.keyCode == 123 || (e.ctrlKey&&e.shiftKey&&e.keyCode==73) || (e.ctrlKey&&e.keyCode==85)) return false
})
本文标题：javascript 禁止键盘特定键
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