javascript - key 中包含 "-"的 Json

Question

这个问题已经有答案了:

How do I reference a JavaScript object property with a hyphen in it? (11 个回答)

已关闭 7 年前。

var data = {
    "train": {
        "number": "12155",
        "days": [
            {
                "runs": "Y",
                "day-code": "SUN"
            },
            {
                "runs": "Y",
                "day-code": "MON"
            },
            {
                "runs": "Y",
                "day-code": "TUE"
            },
            {
                "runs": "Y",
                "day-code": "WED"
            },
            {
                "runs": "Y",
                "day-code": "THU"
            },
            {
                "runs": "Y",
                "day-code": "FRI"
            },
            {
                "runs": "Y",
                "day-code": "SAT"
            }
        ],
        "name": "BHOPAL  EXPRESS"
    },
    "response_code": 200
};
$(document).ready(function(){

var datalist = data.train.days;


      for(var i in datalist)
      {
           $(".train").append("<p> Run on" +datalist[i].day-code +"-" + datalist[i].runs +"</p>");
      }


}); 

这段代码给我一个错误 datalist[i].day-code “代码未定义”。我如何访问包含“-”的 key 。如果我只使用 datalist[i].runs 它运行正常.请提出建议。

Answer 1

您需要更换

datalist[i].day-code

与

datalist[i]['day-code']