fix(touch): 修复移动端 rate, carousel 一些小问题 (#1469)

* 修复 carousel 移动端滑动切换后，点击箭头切换异常的问题

* 修复 rate 移动端滑动时，评分文本未更新的问题

src/modules/lay.js

@@ -568,9 +568,12 @@
     var onStart = function(e){
       if(e.touches.length !== 1) return;
       bindEvents();
+      // 重置状态
       state.timeStart = Date.now();
       state.pointerStart.x = state.pointerEnd.x = e.touches[0].clientX;
       state.pointerStart.y = state.pointerEnd.y = e.touches[0].clientY;
+      state.distanceX = state.distanceY = 0;
+      state.direction = 'none'
 
       options.onTouchStart && options.onTouchStart(e, state);
     }

src/modules/rate.js

@@ -253,6 +253,7 @@ layui.define(['jquery', 'lay'],function(exports){
 
         // 更新最终值
         options.value = score;
+        if(options.text)  _ul.next("span").text(options.value + "星");
         options.setText && options.setText(options.value);
       },
       onTouchEnd: function(e, state){