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in Technique[技术] by (71.8m points)

useEffect依赖多个

const {id, name, visible} = this.props
useEffect(() => {
        const getData = async ()=>{
            const res = await fetch({id, name});
        }
        getData()
    }, [visible, id, name]);

假如这里依赖三个参数,如果props的三个参数都变,会请求三次接口,这个怎么解决?

如果只依赖visible,lint会报错,提示缺少依赖项


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1 Reply

0 votes
by (71.8m points)

常规来说,依赖id、name才合适,为什么要依赖visible,如果只是因为visible为true的时候,才去调接口,你完全可以

const {id, name, visible} = this.props;
const getData = async ()=>{
    const res = await fetch({id, name});
}
useEffect(() => {
    if(visible) {
        getData()
    }
}, [visible, id, name]);

还有就是最好把接口请求提到外层


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