diff --git a/utils/index.js b/utils/index.js
index 28feac5..ba26030 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -1,5 +1,17 @@
 import mqtt from './mqtt.js'
 import store from '../store/index.js'
+
+
+/**
+ * 文本过长截取
+ * @param {string} value 文本内容
+ * @param {Number} length 设定长度
+ * @returns {string} 截取完的内容最后加省略号
+ */
+export function truncate(value, length = 5) {
+	if (!value) return '';
+	return value.length > length ? value.slice(0, length) + '...' : value;
+}
 /**
  * Parse the time to string
  * @param {(Object|string|number)} time