


In Vue 3, how to implement synchronous input of multiple input box contents using ref and computed?
Apr 05, 2025 am 07:00 AMHow to implement synchronous input of multiple input boxes in Vue 3?
When building Vue 3 applications, it is often necessary to realize real-time synchronization of multiple input boxes. For example, an address form, you want the contents of the provincial, municipal, and district input boxes to be automatically merged into a total address box. This article will introduce how to use ref
and computed
properties of Vue 3 to efficiently implement this function.
First, use ref
to create a responsive variable to store the value of each input box, and then computed
to calculate the merged address.
The following code example demonstrates this process:
import { ref, calculated } from 'vue'; // Use ref to create responsive variables, storing the values ??of provinces, cities and districts respectively const province = ref(''); const city = ref(''); const district = ref(''); // Use computed to calculate the merged address const address = computed(() => [province.value, city.value, district.value].join(' '));
In the code, province
, city
and district
correspond to the values ??of the province, city and district input boxes respectively. When these values ??change, computed
property will automatically recalculate the address
value, thereby real-time synchronization of the input box content. The join(' ')
method connects the values ??of provinces, cities and districts with spaces to form a complete address string.
The above is the detailed content of In Vue 3, how to implement synchronous input of multiple input box contents using ref and computed?. For more information, please follow other related articles on the PHP Chinese website!

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