javascript - How do you insert custom dynamic values to subtitle?

Question

I am trying to insert current date to subtitle in highcharts as below:

   subtitle: {
     text: function() {
       var d = new Date();
       return '<b>' +  d + '</b>';
     },
   },

I am not getting Date value instead I am getting the function printed as the subtitle. Any ideas?

score 1 · Accepted Answer

d.toDateString(); 或 d.toLocaleDateString(); 或 d.toString(); ...

score 0 · Accepted Answer

如果您使用函数，则需要通过自动运行函数（闭包）调用：

 text: (function () {
            return 'aaaaa dynamic'
        })(),

2 回答 2