在JavaScript代码中获取数据属性

您需要访问

dataset

document.getElementById("the-span").addEventListener("click", function() {  var json = JSON.stringify({    id: parseInt(this.dataset.typeid),    subject: this.dataset.type,    points: parseInt(this.dataset.points),    user: "Luïs"  });});

结果：

// json would equal:{ "id": 123, "subject": "topic", "points": -1, "user": "Luïs" }