Merge branch 'master' of https://gitee.com/mixly2/mixio

.workflow/mixio_build.yml

@@ -17,7 +17,7 @@ stages:
       - step: build@nodejs
         name: build_nodejs
         displayName: Nodejs 构建
-        nodeVersion: 12.16.1
+        nodeVersion: 16.14.2
         commands:
           - '# 设置NPM源，提升安装速度'
           - npm config set registry https://registry.npmmirror.com

src/loader.js

@@ -2426,4 +2426,20 @@ function timeStamp2String() {
     var minute = datetime.getMinutes() < 10 ? "0" + datetime.getMinutes() : datetime.getMinutes();
     var second = datetime.getSeconds() < 10 ? "0" + datetime.getSeconds() : datetime.getSeconds();
     return year + "-" + month + "-" + date + " " + hour + ":" + minute + ":" + second;
+}
+
+function isJSON(str) {
+    if (typeof str == 'string') {
+        try {
+            var obj = JSON.parse(str);
+            if (typeof obj == 'object' && obj) {
+                return true;
+            } else {
+                return false;
+            }
+
+        } catch (e) {
+            return false;
+        }
+    }
 }