javascript 在 HighCharts 中获取 X 轴值
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Getting the X Axis value in HighCharts
提问by Hadleigh
I am trying to get the actual value of the x axis into a string but I can't work out the syntax.
我试图将 x 轴的实际值转换为字符串，但我无法计算出语法。
I have just started to develop a demonstration version of the HighCharts, so the example below is what I am altering:
我刚刚开始开发 HighCharts 的演示版本，所以下面的例子是我正在改变的：
http://www.highcharts.com/demo/line-ajax/grid
http://www.highcharts.com/demo/line-ajax/grid
(press options to see the code behind this)
（按选项查看这背后的代码）
I am trying to change the following line of code
我正在尝试更改以下代码行
maincontentText: Highcharts.dateFormat('%A, %b %e, %Y', this.x) +':<br/> '+ this.y +' visits',
maincontentText: Highcharts.dateFormat('%A, %b %e, %Y', this.x) +':<br/> '+ this.y +' visits',
This is because my data x axis value is a Month name. Therefore I want to say something like:
这是因为我的数据 x 轴值是月份名称。因此，我想说：
maincontentText: this.x.value +': '+ this.y +' visits',
maincontentText: this.x.value +': '+ this.y +' visits',
It's probably very simple, does anyone know why every permutation I try has failed?
这可能很简单，有谁知道为什么我尝试的每个排列都失败了？
Thanks :-)
谢谢 ：-）
回答by eolsson
The example you started with has a numeric x-axis, a timeline, this.xwill be a number (milliseconds from jan 1, 1970) suitable for Highcharts.dateFormat.
您开始的示例有一个数字 x 轴，一个时间轴，this.x将是一个适合Highcharts.dateFormat.
If you have changed the example to use a categorical x-axis, then you instead find the category in this.categoryso I think this will work:
如果您已将示例更改为使用分类 x 轴，那么您可以在其中找到类别，this.category因此我认为这会起作用：
maincontentText: this.category +': '+ this.y +' visits',
maincontentText: this.category +': '+ this.y +' visits',
Example: here
例子：这里
