react中直接使用lodash的debounce函数,发现并未生效,1秒内多次触发,控制台仍有多次打印,这是因为debounceSearch函数被重新定义了,需要使用useCallback来包装函数。
javascript
import { ChangeEvent } from "react"
import { useCallback, useState } from "react"
import { Input } from "antd"
import _ from "lodash"
export default () => {
const [idValue, setIdValue] = useState<string>("")
const debounceSearch = _.debounce((value) => {
console.log(value)
}, 1000)
)
const onIptChange = (e: ChangeEvent<HTMLInputElement>) => {
debounceSearch(e.target.value)
}
return <Input value={idValue} onChange={onIptChange}/>
}
使用useCallback,可以将这个函数缓存起来,避免重复定义。
javascript
const debounceSearch = useCallback(
_.debounce((value) => {
console.log(value)
}, 1000),
[]
)