improve demo code style

components/input/demo/tooltip.md

@@ -43,38 +43,37 @@ class NumericInput extends React.Component {
 
   // '.' at the end or only '-' in the input box.
   onBlur = () => {
-    const { value } = this.props;
+    const { value, onBlur, onChange } = this.props;
     if (value.charAt(value.length - 1) === '.' || value === '-') {
-      this.props.onChange({ value: value.slice(0, -1) });
+      onChange({ value: value.slice(0, -1) });
     }
-    if (this.props.onBlur) {
-      this.props.onBlur();
+    if (onBlur) {
+      onBlur();
     }
   }
 
   render() {
     const { value } = this.props;
-    const title = (value ?
-      (<span className="numeric-input-title">
+    const title = value ? (
+      <span className="numeric-input-title">
         {value !== '-' ? formatNumber(value) : '-'}
-      </span>) : '');
+      </span>
+    ) : '';
     return (
-      <div>
-        <Tooltip
-          trigger={['focus']}
-          title={title}
-          placement="topLeft"
-          overlayClassName="numeric-input"
-        >
-          <Input
-            {...this.props}
-            onChange={this.onChange}
-            onBlur={this.onBlur}
-            placeholder="input a number"
-            maxLength="25"
-          />
-        </Tooltip>
-      </div>
+      <Tooltip
+        trigger={['focus']}
+        title={title}
+        placement="topLeft"
+        overlayClassName="numeric-input"
+      >
+        <Input
+          {...this.props}
+          onChange={this.onChange}
+          onBlur={this.onBlur}
+          placeholder="input a number"
+          maxLength="25"
+        />
+      </Tooltip>
     );
   }
 }
@@ -89,11 +88,7 @@ class NumericInputDemo extends React.Component {
   }
   render() {
     const { value } = this.state;
-    return (
-      <div className="numeric-input-demo">
-        <NumericInput value={value} onChange={this.onChange} />
-      </div>
-    );
+    return <NumericInput style={{ width: 120 }} value={value} onChange={this.onChange} />;
   }
 }
 
@@ -111,8 +106,4 @@ or the height is not enough when content is empty */
 .numeric-input .numeric-input-title {
   font-size: 14px;
 }
-
-.numeric-input-demo {
-  width: 120px;
-}
 ````