Implement computed calculation method to pass value in vue
As we all know, the computed attribute in Vue cannot directly pass parameters, but I was bored and wanted to see if I could pass the value, so after countless attempts, I came up with the following method: We know that in
computed All calculation methods will have the step of returning data. In order to pass parameters, it should obviously be a function, and computed is different from method, so writing a function is meaningless. So the question is, why can't we return something other than a numerical value in the calculation method? It's a function. I think it's feasible. The result is really right. Here's the code:
<script setup>
import {
ref } from 'vue'
defineProps({
msg: String,
myname:String
})
const count = ref(0)
</script>
<div>{
{
getcount(count)}}</div> <!--这个count来源于script setup里面的count，我没有向外暴露-->
So the following computed should be written like this:
computed:{
getcount()
{
return (val)=>{
console.log('当前count的值是：'+val);
}
}
}
The results are as follows:
It’s really ok. Although I don’t think it’s useful, it’s still good to try more interesting things. Maybe I’ll actually use them in the future hahaha