Function that produces the next value.
Optional debugOptions: DebuggerOptionsFor debugging. See https://vuejs.org/guide/extras/reactivity-in-depth.html#computed-debugging.
The hook version of computed from @vue/reactivity.
This hook version allows the computed ref to be created when the component first renders, then cached for future re-renders.
Takes a getter function and returns a readonly reactive ref object for the returned value from the getter. It can also take an object with get and set functions to create a writable ref object.
// Inside a function component:
// Creating a readonly computed ref:
const count = useRef(1)
const plusOne = useComputed(() => count.value + 1)
console.log(plusOne.value) // 2
plusOne.value++ // error
// Inside a function component:
// Creating a writable computed ref:
const count = useRef(1)
const plusOne = useComputed({
get: () => count.value + 1,
set: (val) => {
count.value = val - 1
}
})
plusOne.value = 1
console.log(count.value) // 0
Optional debugOptions: DebuggerOptionsFor debugging. See https://vuejs.org/guide/extras/reactivity-in-depth.html#computed-debugging.
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The hook version of
computedfrom@vue/reactivity.This hook version allows the computed ref to be created when the component first renders, then cached for future re-renders.
Takes a getter function and returns a readonly reactive ref object for the returned value from the getter. It can also take an object with get and set functions to create a writable ref object.
Example
Example
See
https://vuejs.org/api/reactivity-core.html#computed