custom data attribute - Why does Safari fail to access this.dataset.something in my code? - 


class menuitem extends htmlelement {   constructor() {     super()      this.menuitemid = this.dataset.menuitemid     this.name = this.dataset.name     this.price = this.dataset.price     this.imgurl = this.dataset.imgurl     this.count = this.dataset.count      console.trace(this.dataset)     console.trace(this.dataset.count)   } }

the weird thing this.dataset outputs:

domstringmap   count: "0"   imgurl: "https://s3-ap-southeast-1.amazonaws.com/ghm-pos/assets/nasi_goreng.jpg"   menuitemid: "asdf009"   name: "nasi goreng"   price: "8.20"

but this.dataset.count outputs null

anyone know why?


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