feat(loading-bar): add configurable duration property

src/components/loading-bar/index.js

@@ -2,6 +2,7 @@ import LoadingBar from './loading-bar';
 
 let loadingBarInstance;
 let color = 'primary';
+let duration = 800;
 let failedColor = 'error';
 let height = 2;
 let timer;
@@ -32,7 +33,7 @@ function hide() {
                 percent: 0
             });
         }, 200);
-    }, 800);
+    }, duration);
 }
 
 function clearTimer() {
@@ -96,6 +97,9 @@ export default {
         if (options.color) {
             color = options.color;
         }
+        if (options.duration) {
+            duration = options.duration;
+        }
         if (options.failedColor) {
             failedColor = options.failedColor;
         }

types/loading-bar.d.ts

@@ -41,6 +41,11 @@ export declare interface LoadingBarConfig {
    * @default primary
    */
   color?: string;
+  /**
+   * 自动消失的延时, 默认为800ms
+   * @default 800
+   */
+  duration?: number;
   /**
    * 失败时的进度条颜色，默认为 iView 主色 
    * @default error