diff --git a/src/components/loading-bar/index.js b/src/components/loading-bar/index.js
index dae68a5..c6b031a 100644
--- a/src/components/loading-bar/index.js
+++ b/src/components/loading-bar/index.js
@@ -44,6 +44,8 @@ function clearTimer() {
 
 export default {
     start () {
+        if (timer) return;
+
         let percent = 0;
 
         update({
diff --git a/src/styles/components/date-picker.less b/src/styles/components/date-picker.less
index f8da8fa..1270c03 100644
--- a/src/styles/components/date-picker.less
+++ b/src/styles/components/date-picker.less
@@ -192,6 +192,9 @@
             padding: @btn-padding-large;
             transition: all @transition-time @ease-in-out;
             cursor: pointer;
+            overflow: hidden;
+            text-overflow: ellipsis;
+            white-space: nowrap;
 
             &:hover{
                 background: @border-color-split;
diff --git a/test/routers/date.vue b/test/routers/date.vue
index 5b1ad95..fbe5a11 100644
--- a/test/routers/date.vue
+++ b/test/routers/date.vue
@@ -59,7 +59,7 @@
                             }
                         },
                         {
-                            text: '一周前',
+                            text: '最近三个月',
                             value () {
                                 const date = new Date();
                                 date.setTime(date.getTime() - 3600 * 1000 * 24 * 7);
diff --git a/test/routers/more.vue b/test/routers/more.vue
index 5d15e79..e04eed1 100644
--- a/test/routers/more.vue
+++ b/test/routers/more.vue
@@ -22,9 +22,22 @@
         <i-col :xs="{ span: 11, offset: 1 }" :lg="{ span: 6, offset: 2 }"><div class="aaaaa">Col 2</div></i-col>
         <i-col :xs="{ span: 5, offset: 1 }" :lg="{ span: 6, offset: 2 }"><div class="aaaaa">Col 3</div></i-col>
     </Row>
+    <i-button @click="start">Start</i-button>
+    <i-button @click="finish">Finish</i-button>
+    <i-button @click="error">Error</i-button>
 </template>
 <script>
     export default {
-
+        methods: {
+            start () {
+                this.$Loading.start();
+            },
+            finish () {
+                this.$Loading.finish();
+            },
+            error () {
+                this.$Loading.error();
+            }
+        }
     }
 </script>
--
libgit2 0.21.4