bug fixes

package.json

 {
   "name": "@ezijing/vue-form",
-  "version": "2.2.1",
+  "version": "2.2.2",
   "private": false,
   "description": "基于Vue Element-UI的表单",
   "scripts": {

src/packages/input/src/main.vue

@@ -26,10 +26,10 @@ export default {
   },
   methods: {
     onBlur() {
-      if (this.currentValue) {
+      if (this.currentValue && typeof this.currentValue === 'string') {
         this.data[this.options.model] = this.currentValue.trim()
       }
     }
   }
 }
-</script>
\ No newline at end of file
+</script>