BI-139664 fix:滑块组件

packages/fineui/src/widget/intervalslider/intervalslider.js

@@ -388,27 +388,18 @@ export class IntervalSlider extends Single {
         }
     }
 
-    // 别删，历史原因，定时调度不能用 element.children 函数
-    _getElementFirstChild(parentElement) {
-        return parentElement.children()[0]
-    }
-
     _resetLabelPosition(needReverse) {
         const { lAlign, rAlign } = this.options;
-
         this.labelOne.element.css({
             left: needReverse ? "unset" : "0%",
             right: needReverse ? "0%" : "unset",
         });
-        this._getElementFirstChild(this.labelOne.element)
-            ?.labelOneChild.css({ textAlign: needReverse ? rAlign : lAlign });
-
+        this.labelOne.element.children()[0] && (this.labelOne.element.children()[0].style.textAlign = needReverse ? rAlign : lAlign);
         this.labelTwo.element.css({
         left: needReverse ? "0%" : "unset",
         right: needReverse ? "unset" : "0%",
         });
-        this._getElementFirstChild(this.labelTwo.element)
-            ?.css({ textAlign: needReverse ? lAlign : rAlign });
+        this.labelTwo.element.children()[0] && (this.labelTwo.element.children()[0].style.textAlign = needReverse ? lAlign : rAlign);
     }
 
     _setSliderOnePosition(percent) {