MAT_DATE_FORMATS 字段的定义/含义

本文介绍了MAT_DATE_FORMATS 字段的定义/含义的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

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.

Where are rest of the fields used?
When writing custom MAT_DATE_FORMATS is it mandatory to define allfields?

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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