diff --git a/common/shared.js b/common/shared.js
index 597f90a..c276d9d 100644
--- a/common/shared.js
+++ b/common/shared.js
@@ -49,3 +49,12 @@ var cover = function(par) {
   return par;
 }
 
+// 数组对象去重
+export function deWeightFour(arr, key){
+	let obj = {};
+	arr = arr.reduce(function(a, b) {
+		obj[b[key]] ? '' : obj[b[key]] = true && a.push(b);
+		return a;
+	}, []);
+	return arr;
+}
\ No newline at end of file