MAT_DATE_FORMATS 字段的定义/含义 [英] MAT_DATE_FORMATS definition/meaning of fields

问题描述

 解析:{dateInput: 'DD.MM.YYYY',},展示: {dateInput: 'DD.MM.YYYY',monthYearLabel: 'MMM YYYY',dateA11yLabel: 'LL',monthYearA11yLabel: 'MMMM-YYYY',},

• with parse.dateInput:您可以让用户以任何格式输入任何类型的日期，日期适配器会将其重新格式化为您在此属性中指定的格式

• 使用display.dateInput可以指定输入日期格式(标有1)

• display.monthYearLabel 可以指定标有2的区域

不幸的是，我仍然不知道其余的！

Material example for customizing-the-parse-and-display-formats for date picker uses custom MAT_DATE_FORMATS

export const MY_FORMATS = {
  parse: {
    dateInput: 'LL',
  },
  display: {
    dateInput: 'LL',
    monthYearLabel: 'MMM YYYY',
    dateA11yLabel: 'LL',
    monthYearA11yLabel: 'MMMM YYYY',
  },
};

I could not find where and how these fields like dateA11yLabel will come into play. What I could figure out was display.dateInput is used in displaying selected date on calendar and display.monthYearLabel is used in the select drop-down of year selector.

1. Where are rest of the fields used?
2. When writing custom MAT_DATE_FORMATS is it mandatory to define all fields?

解决方案

Well, I figured out the following:

 parse: {

    dateInput: 'DD.MM.YYYY',
  }, 
  display: {

    dateInput: 'DD.MM.YYYY',
    monthYearLabel: 'MMM YYYY',
    dateA11yLabel: 'LL',
    monthYearA11yLabel: 'MMMM-YYYY',
  },

• with parse.dateInput: you can let the user enter any type of date with any format, and the date adapter will reformat it to the format you specify in this attribute

• with display.dateInput you can specify the input date format (marked with 1)

• display.monthYearLabel you can specify the area marked with 2

unfortunately, I still don't know about the rest!

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