refThrottled

参考值的节流变化。

¥Throttle changing of a ref value.

示例

源代码演练场

Delay is set to 1000ms for this demo.

Throttled:

Times Updated: 0

Trailing: true

Leading: false

用法

¥Usage

import { refThrottled
 } from '@vueuse/core'
import { shallowRef
 } from 'vue'

const input
 = shallowRef
('')
const throttled
 = refThrottled
(input
, 1000)

一个使用对象引用的示例。

¥An example with object ref.

import { refThrottled } from '@vueuse/core'
import { shallowRef } from 'vue'

const data = shallowRef({
  count: 0,
  name: 'foo',
})
const throttled = refThrottled(data, 1000)

data.value = { count: 1, name: 'foo' }
console.log(throttled.value) // { count: 1, name: 'foo' } (immediate)

data.value = { count: 2, name: 'bar' }
data.value = { count: 3, name: 'baz' }
data.value = { count: 4, name: 'qux' }
console.log(throttled.value) // { count: 1, name: 'foo' } (still first value)

// After 1000ms, next change will be applied
await sleep(1100)
data.value = { count: 5, name: 'final' }
await nextTick()
console.log(throttled.value) // { count: 5, name: 'final' } (updated)

尾随

¥Trailing

如果你不想查看跟踪更改，请设置第三个参数 false（默认为 true）：

¥If you don't want to watch trailing changes, set 3rd param false (it's true by default):

import { refThrottled
 } from '@vueuse/core'
import { shallowRef
 } from 'vue'

const input
 = shallowRef
('')
const throttled
 = refThrottled
(input
, 1000, false)

领导

¥Leading

允许立即调用回调（在 ms 超时的前沿）。如果你不希望出现此行为，请设置第四个参数 false（默认为 true）：

¥Allows the callback to be invoked immediately (on the leading edge of the ms timeout). If you don't want this behavior, set the 4th param false (it's true by default):

import { refThrottled
 } from '@vueuse/core'
import { shallowRef
 } from 'vue'

const input
 = shallowRef
('')
const throttled
 = refThrottled
(input
, 1000, undefined
, false)

refThrottled ​

示例 ​

用法 ​

尾随 ​

领导 ​

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refThrottled

示例

用法

尾随

领导

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