在common下新建fun.js

	// 不含icon提示框
	const toast = str => {
		return new Promise((resolve, reject) => {
			uni.showToast({
				title: str,
				icon: "none",
				duration: 2000,
				success: () => {
					setTimeout(() => {
						resolve
					}, 2000)
				}
			})
		})
	};
	// 成功提示框
	const successToast = str => {
		return new Promise((resolve, reject) => {
			uni.showToast({
				title: str,
				icon: "success",
				duration: 2000,
				success: () => {
					setTimeout(() => {
						resolve()
					}, 2000)
				}
			})
		})
	};
	// loading
	const showLoading = () => {
		return new Promise((resolve, reject) => {
			uni.showLoading({
				success: () => {
					resolve()
				}
			})
		})
	};
	// tipLoading ==>提示loading
	const tipLoading = str => {
		return new Promise((resolve, reject) => {
			uni.showLoading({
				title: str,
				success: () => {
					resolve()
				}
			})
		})
	};
	// 隐藏loading
	const hideLoading = () => {
		return new Promise((resolve, reject) => {
			uni.hideLoading({
				success: () => {
					resolve()
				}
			})
		})
	};
	export default {
		toast: toast,
		successToast: successToast,
		showLoading: showLoading,
		tipLoading: tipLoading,
		hideLoading: hideLoading,
	}

在main.js中全局引入并使用

import $ from 'common/fun.js'
Vue.prototype.$ = $

在页面调用

t.$.toast("提示消息");
t.$.successToast('成功提示消息');
t.$.showLoading();
t.$.tipLiading("提示loading");
t.$.hideLoading();