一、微信公众号平台配置网页授权域名

二、示例代码
<template><button open-type="login" @tap="wxLogin">允许</button>
</template>
<script setup lang="ts">
import { onLoad } from "@dcloudio/uni-app";
import loginApi from "@/api/loginApi";
import { ref } from "vue";
const isWeixin = ref(false); onLoad(() => {isWeixin.value = isWechat();if (isWeixin.value) {checkWeChatCode();}
})
const isWechat = () => {return String(navigator.userAgent.toLowerCase().match(/MicroMessenger/i)) === "micromessenger";
}
const getUrlCode = (name: string) => {return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.href) || [, ''])[1].replace(/\+/g, '%20')) || null
}
const checkWeChatCode = () => {let code = getUrlCode('code');if (code) {bindUser(code)}
}
const wxLogin = () => {let uri = encodeURIComponent(window.location.href);window.location.href = `https://open.weixin.qq.com/connect/oauth2/authorize?appid=appid&redirect_uri=${uri}&response_type=code&scope=snsapi_base&state=STATE#wechat_redirect`;
}
const bindUser = (code: string) => {}
</script>
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