一、在main.js中设置方法checkPermission绑定到Vue.prototype
核心代码
javascript
Vue.prototype.$checkPermission = function(username) {
console.log('Checking permission for:', username);
};
完整代码
javascript
import App from './App'
// 添加 checkPermission 方法到 Vue.prototype 上,检查权限(这一段是方法的设置)
Vue.prototype.$checkPermission = function(username) {
console.log('Checking permission for:', username);
};
// #ifndef VUE3
import Vue from 'vue'
Vue.config.productionTip = false
App.mpType = 'app'
const app = new Vue({
...App
})
app.$mount()
// #endif
// #ifdef VUE3
import { createSSRApp } from 'vue'
export function createApp() {
const app = createSSRApp(App)
return {
app
}
}
// #endif
二、在页面引用全局方法
核心代码
javascript
this.$checkPermission(this.username);
完整代码
javascript
export default {
data() {
return {
username: 'testuser'
};
},
methods: {
onLoad() {
this.$checkPermission(this.username);//调用方法,传递参数username
}
}
};
补充:涉及到异步问题
一、main.js(全局方法有请求服务器的操作)
javascript
import App from './App'
// 添加 checkPermission 方法到 Vue.prototype 上,检查权限
Vue.prototype.$checkPermission = function(username) {
return new Promise((resolve, reject) => {
uni.request({
url: getApp().globalData.position + 'Xcxuser/checkpermission',
header: {
"Content-Type": "application/x-www-form-urlencoded"
},
method: 'POST',
dataType: 'json',
data: {
username: username,
},
success: res => {
// console.log('Server Response:', res);
resolve(res);
},
fail: err => {
console.log(err);
reject(err);
}
});
});
};
// #ifndef VUE3
import Vue from 'vue'
Vue.config.productionTip = false
App.mpType = 'app'
const app = new Vue({
...App
})
app.$mount()
// #endif
// #ifdef VUE3
import { createSSRApp } from 'vue'
export function createApp() {
const app = createSSRApp(App)
return {
app
}
}
// #endif
二、userlogin.vue(调用方法)
javascript
methods: {
//权限检查
async checkUserPermission(username) {
try {
const response = await this.$checkPermission(username);
console.log('Server Response:', response);
this.permissionResult = response.data; // 假设服务器返回的数据在response.data中
this.permissionChecked = true;
} catch (error) {
console.error('Error checking permission:', error);
}
},
mounted() {
// 页面加载时调用权限检查
this.checkUserPermission('yourUsername');
}
}