将时间戳记转换为日期表达式，例如{{new Date(timestamp)}} [英] convert time stamp to Date inside angular expression like {{new Date(timestamp)}}

问题描述

今天我发现在角度表达式中转换日期不起作用.

Today I found that's it's not working to convert for a date inside angular expression.

所以我只是做类似

<th>{{new Date(elem.timestamp}}</th>

但是由于内部角度错误而失败.

But it fails with internal angular error.

那么为什么不能在角度表达式中强制转换为Date?

So why it's not possible to cast to Date inside angular expression?

推荐答案

因为角度表达式不接受任意Javascript代码，包括创建新对象.您正在寻找的就是所谓的角度滤波器，它们是为这种情况专门设计的.

Because angular expressions do not accept arbitrary Javascript code, including creating new objects. What you are looking for is called angular filters, they were specifically designed for this case.

所以不是

{{new Date(elem.timestamp)}}

您应该写

{{elem.timestamp | date: 'yyyy-MM-dd'}}

有关日期过滤器的更多信息，可以在此处找到.一般而言，可以在此处找到更多有关过滤器的信息.

More info on date filter can be found here. More on filters in general can be found here.

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