feat(lang): 实现浮动按钮切换语言功能

common/js/lang.js

@@ -58,19 +58,23 @@ export default {
 		if (value == undefined || (value == 'title' && field == 'title')) value = ''; // field
 		return value;
 	},
-	//切换语言
-	change(value) {
+	/**
+	 * * 切换语言
+	 * @param {String} value 语言值
+	 * @param {String} url 切换后跳转的页面url
+	 */
+	change(value, url = '/pages/member/index') {
 		let _this = getCurrentPages()[getCurrentPages().length - 1];
 		if (!_this) return;
 
 		uni.setStorageSync("lang", value);
 		locale = uni.getStorageSync('lang') || "zh-cn"; //设置语言
-		
+
 		this.refresh();
 
-		uni.reLaunch({
-			url: '/pages/member/index'
-		});
+		if (url) {
+			uni.reLaunch({ url: url });
+		}
 	},
 	//刷新标题、tabbar
 	refresh() {