Javascript:从SVG中选择自定义数据-*属性无效

试图从svg（我插入的）中获取自定义数据信息。我一直在使用本文中概述的方法：但我不确定哪里出了问题，因为当我尝试console.log数据属性（使用两种不同的方法）时，它返回null和undefined

让svgArray=[''”；
让gameTile=document.getElementById（'gameTile'）；
gameTile.innerHTML=svgArray[0]；
让tileValue1=gameTile.getAttribute（'data-number'）；
让tileValue2=gameTile.dataset.number；
//让tileValue3=SVGElement.dataset.number；
console.log（tileValue1）；
控制台日志（tileValue2）；
//控制台日志（tileValue3）
*{
保证金：0；
填充：0；
框大小：边框框；
}
.集装箱{
显示器：flex；
证明内容：中心；
对齐项目：居中；
背景：径向梯度（中心椭圆，#1d9325 0%，#17752d 57%，#013a01 100%）；
}
.底层{
显示器：flex；
弯曲方向：立柱；
证明内容：中心；
对齐项目：居中；
宽度：100%；
高度：100vh；
}
.行{
显示器：flex；
弯曲方向：行；
}
.瓷砖{
高度：5.75雷姆；
宽度：4.5雷姆；
背景#f2f2；
边界半径：5px；
边框：实心rgb（59,59,59）.2px；
显示器：flex；
证明内容：中心；
}
svg{
宽度：100%；
边框：纯紫色2件；
}
.selectableTile:悬停{
光标：指针；
-网络工具包盒阴影：0px 0px 12px 5px rgba（0,0,0,0.4）；
盒影：0px 0px 12px 5px rgba（0,0,0,0.4）；
}
您可以使用类似的方法

let gameTile2 = document.querySelector('#gameTile svg');


让svgArray=[''”；
让gameTile=document.getElementById（'gameTile'）；
gameTile.innerHTML=svgArray[0]；
让gameTile2=document.querySelector（“#gameTile svg”）；
让tileValue1=gameTile2.getAttribute（'data-number'）；
让tileValue2=gameTile2.dataset.number；
//让tileValue3=SVGElement.dataset.number；
console.log（tileValue1）；
控制台日志（tileValue2）；
//控制台日志（tileValue3）；
data

属性不在

gameTile

元素上。您需要从SVG中的适当元素获取它。

gameTile.querySelector（“SVG”）.dataset.number

非常感谢！

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    let gameTile = document.getElementById('gameTile');
    gameTile.innerHTML = svgArray[0];
    let gameTile2 = document.querySelector('#gameTile svg');
    let tileValue1 = gameTile2.getAttribute('data-number');
    let tileValue2 = gameTile2.dataset.number;
//let tileValue3 = SVGElement.dataset.number;

    console.log(tileValue1);
    console.log(tileValue2);
//console.log(tileValue3);