[Improvement] support Number type info (#845)

packages/badge/index.vue

@@ -1,19 +1,20 @@
 <template>
   <a class="van-badge van-hairline" :class="{ 'van-badge--select': isSelect }" :href="url" @click="onClick">
-    <div v-if="info" class="van-badge__info">{{ info }}</div>
+    <div v-if="isDef(info)" class="van-badge__info">{{ info }}</div>
     {{ title }}
   </a>
 </template>
 
 <script>
 import create from '../utils/create';
+import { isDef } from '../utils';
 
 export default create({
   name: 'badge',
 
   props: {
     url: String,
-    info: String,
+    info: [String, Number],
     title: String
   },
 
@@ -28,6 +29,8 @@ export default create({
   },
 
   methods: {
+    isDef,
+
     onClick() {
       this.$emit('click', this.$parent.badges.indexOf(this));
     }

packages/goods-action-mini-btn/index.vue

@@ -17,7 +17,7 @@ export default create({
   props: {
     url: String,
     text: String,
-    info: String,
+    info: [String, Number],
     icon: String,
     iconClass: String
   },

packages/icon/index.vue

@@ -1,11 +1,12 @@
 <template>
   <i class="van-icon" :class="`van-icon-${name}`" v-on="$listeners">
     <slot />
-    <div v-if="info" class="van-icon__info">{{ info }}</div>
+    <div v-if="isDef(info)" class="van-icon__info">{{ info }}</div>
   </i>
 </template>
 
 <script>
+import { isDef } from '../utils';
 import create from '../utils/create-basic';
 
 export default create({
@@ -13,7 +14,11 @@ export default create({
 
   props: {
     name: String,
-    info: String
+    info: [String, Number]
+  },
+
+  methods: {
+    isDef
   }
 });
 </script>

packages/tabbar-item/index.vue

@@ -4,7 +4,7 @@
       <slot name="icon" :active="active">
         <icon v-if="icon" :name="icon" />
       </slot>
-      <div v-if="info" class="van-icon__info">{{ info }}</div>
+      <div v-if="isDef(info)" class="van-icon__info">{{ info }}</div>
     </div>
     <div class="van-tabbar-item__text">
       <slot :active="active"/>
@@ -13,6 +13,7 @@
 </template>
 
 <script>
+import { isDef } from '../utils';
 import create from '../utils/create';
 import RouterLink from '../mixins/router-link';
 
@@ -24,7 +25,7 @@ export default create({
   props: {
     icon: String,
     dot: Boolean,
-    info: String
+    info: [String, Number]
   },
 
   data() {
@@ -42,6 +43,8 @@ export default create({
   },
 
   methods: {
+    isDef,
+
     onClick(event) {
       this.$parent.onChange(this.$parent.items.indexOf(this));
       this.$emit('click', event);