item: [{a:false}, {a:true}, {a:false}, {a:true}] .
you can watch the entire item.
computed, you can return an array of updated results and then v-for the component.
computed:{
value(){
return this.item.map((item)=>{
if(item){
//
return update()
} else {
return <>
}
})
}
}then vFF = "value"
you can either watch or computed.
watch requires deep watch:
watch: {
list: {
deep: true,
handler( newList, oldList){
const changedIndex = newList.findIndex((item, index)=> {
oldList[index] !== item //
})
// changedIndex
}
}
}computed needs to calculate the item you need to listen to, and then watch it. It is suitable for you to know exactly which item you want to listen to. It has better performance than the above, after all, there are fewer listeners.
Previous: What does verify & & verify () mean?
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