[英]next.js code works in run dev but not run build
问题在于运行开发中的 useAddress() 功能,当控制台记录时它返回未定义的未定义然后地址,但是在运行构建/启动中它只返回未定义。 我该如何解决这个问题。
import { useAddress } from "@thirdweb-dev/react"; import Head from 'next/head'; import Link from 'next/link'; import Username from '../components/Username'; import React from "react"; const Home = () => { let address = useAddress(); console.log(address) if (address) { return ( <> <Head> <title>home</title> <link rel="icon" href="/drum.svg" /> </Head> <Username address={address} /> </> ); } else { return ( <> <Head> <title>home</title> <link rel="icon" href="/drum.svg" /> </Head> <Link href="/"> <a className="absolute pt-1 text-xl font-semibold transform -translate-x-1/2 top-1/2 left-1/2">click here to log in</a> </Link> </> ); } } export default Home;
React 中的命令式代码太不可预测了。 您应该改用useEffect(()=>{console.log(address)},[])
,它在两种设置中的工作方式可能相同。
我希望这有效:
import { useAddress } from "@thirdweb-dev/react";
import Head from 'next/head';
import Link from 'next/link';
import Username from '../components/Username';
import React, {useState, useEffect} from "react";
const Home = () => {
const [address, setAddress] = useState(false)
useEffect(()=> {
setAddress(useAddress())
}, [])
if (address) {
return (
<>
<Head>
<title>home</title>
<link rel="icon" href="/drum.svg" />
</Head>
<Username address={address} />
</>
);
} else {
return (
<>
<Head>
<title>home</title>
<link rel="icon" href="/drum.svg" />
</Head>
<Link href="/">
<a className="absolute pt-1 text-xl font-semibold transform -translate-x-1/2 top-1/2 left-1/2">click here to log in</a>
</Link>
</>
);
}
}
export default Home;
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