下面这段代码做键盘映射的在IE11下运行,会报”缺少标识符、字符串或者数字“,请教怎样改写可以让它适应IE11?var isMac = navigator.platform.toUpperCase().indexOf('MAC')>=0;var key = isMac ? "Cmd" : "Ctrl";var keyMaps = { [key + "-1"] : "h1", [key + "-2"] : "h2", [key + "-3"] : "h3", [key + "-4"] : "h4", [key + "-5"] : "h5", [key + "-6"] : "h6", [key + "-B"] : "bold", [key + "-D"] : "datetime"}
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