获取当前及以后的Formik验证

问题描述

我需要使用Formik进行验证，即输入只能是currentYear或更高版本.

I need to get the validation using Formik that input should only be currentYear and up.

 const currentYear = new Date().getFullYear();

expiryYear: yup
.string()
.required('Select expiry year')
.min(4, `Invalid year format (Example: ${currentYear + 4})`)
.max(4, `Invalid year format (Example: ${currentYear + 4})`)
.when('startDate', (currentYear, schema) => currentYear && schema.min(currentYear)),

推荐答案

请尝试以下操作:

yup.date()
 .min(new Date().getFullYear(),
 'Year must be current year or greater than current year');

检查演示

如果您想验证年份的长度，可以使用以下方法:

If you would like to validate the year's length, you can use this:

yup.number()
.test('len', 'Must be exactly 4 characters', 
val => val && val.toString().length === 4 ).min(new Date().getFullYear());

这将首先验证年份的长度，然后检查它是否大于或等于当前年份.

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