页面监听键盘按键 index.uvue

            onLoad() {  
        this.test()  
    },  
    onShow() { },  
    methods: {  

        //键盘按键  
        KeyEventFun(event : UniKeyEvent) {  
            console.log("------event-------", event.keyCode)  
        },  

        test() {  
            let myPageKeyEle = uni.getElementById("myPageKey")  
            console.log("------myPageKeyEle-------", myPageKeyEle)  
            myPageKeyEle?.addEventListener("keydown", this.KeyEventFun)  
        }  
    }