feat: 添加支持暗夜模式

Author: mhpei

packages/taro-ui-docs/components/sidebar/style.scss

@@ -14,7 +14,6 @@
 }
 
 .darkbox {
-  // background-color: #434242;
   background-color: #23272f;
 }
 

packages/taro-ui-docs/lib/default.scss

@@ -91,14 +91,14 @@ $black-100                  : #C0C6CE;
 $black-200                  : #96A0AD;
 $black-300                  : #6B798C;
 $black-400                  : #4C5D73;
-$black-500                  : #5a2c36;
+$black-500                  : #2C405A;;
 $black-600                  : #273A52;
 $black-700                  : #213248;
 $black-800                  : #1B2A3F;
 $black-900                  : #101C2E;
 
 $text-color                 : #3F536E;
-$title-color                : #5a2c45;
+$title-color                : #2C405A;;
 
 $border-color-gray          : #CCC;
 $border-color-base          : #C5D9E8;

packages/taro-ui-docs/pages/docs.jsx

@@ -29,9 +29,9 @@ class Docs extends React.Component {
   }
 
   UNSAFE_componentWillReceiveProps(nextProps) {
-    // if (nextProps.location.pathname !== this.props.location.pathname) {
-    //   this.refs.atMarkdown.scrollTo(0, 0)
-    // }
+    if (nextProps.location.pathname !== this.props.location.pathname) {
+      this.refs.atMarkdown.scrollTo(0, 0)
+    }
   }
 
   changeMode() {
@@ -47,8 +47,7 @@ class Docs extends React.Component {
   render() {
     const data = navsConfig.components
     const { fixed, mode } = this.state
-    // const pathname = this.props.location.pathname
-    const pathname = '/docs/introduction'
+    const pathname = this.props.location.pathname
     const reg = /\/\S+\/(\S+)/
     const result = pathname.match(reg)
     const curDemoPath = pathMap[result[1]] || ''