解决输入框第一次验证错误的问题

packages/input/src/input.vue

@@ -139,7 +139,8 @@
         focused: false,
         isComposing: false,
         passwordVisible: false,
-        task: null
+        focusTimer: null,
+        focusOpen: false
       };
     },
 
@@ -190,10 +191,6 @@
         type: Boolean,
         default: false
       },
-      lazy: {
-        type: [Boolean, Object],
-        default: false
-      },
       tabindex: String
     },
 
@@ -313,9 +310,6 @@
         if (this.validateEvent) {
           this.dispatch('ElFormItem', 'el.form.blur', [this.value]);
         }
-        if (this.lazy) {
-          this.handleInput(event, true);
-        }
       },
       select() {
         this.getInput().select();
@@ -362,28 +356,22 @@
           this.handleInput(event);
         }
       },
-      handleInput(event, refresh) {
+      handleInput(event) {
         // should not emit input during composition
         // see: https://github.com/ElemeFE/element/issues/10516
-        if (this.isComposing || (this.lazy && !refresh)) {
-          this.isInput = true;
-          let _this = this;
-          clearTimeout(_this.task);
-          _this.task = setTimeout(() => {
-            this.handleInput(event, true);
-          }, 1500);
-          return;
-        }
+        if (this.isComposing) return;
 
         // hack for https://github.com/ElemeFE/element/issues/8548
         // should remove the following line when we don't support IE
         if (event.target.value === this.nativeInputValue) return;
 
-        this.$emit('input', event.target.value);
-
-        // ensure native input value is controlled
-        // see: https://github.com/ElemeFE/element/issues/12850
-        this.$nextTick(this.setNativeInputValue);
+        clearTimeout(this.focusTimer);
+        this.focusTimer = setTimeout(() => {
+          this.$emit('input', event.target.value);
+          // ensure native input value is controlled
+          // see: https://github.com/ElemeFE/element/issues/12850
+          this.$nextTick(this.setNativeInputValue);
+        }, 300);
       },
       handleChange(event) {
         this.$emit('change', event.target.value);