提交初始版本，使用vant ui库

miniprogram_npm/@vant/weapp/sticky/index.wxs

@@ -0,0 +1,25 @@
+/* eslint-disable */
+var style = require('../wxs/style.wxs');
+var addUnit = require('../wxs/add-unit.wxs');
+
+function wrapStyle(data) {
+  return style({
+    transform: data.transform
+      ? 'translate3d(0, ' + data.transform + 'px, 0)'
+      : '',
+    top: data.fixed ? addUnit(data.offsetTop) : '',
+    'z-index': data.zIndex,
+  });
+}
+
+function containerStyle(data) {
+  return style({
+    height: data.fixed ? addUnit(data.height) : '',
+    'z-index': data.zIndex,
+  });
+}
+
+module.exports = {
+  wrapStyle: wrapStyle,
+  containerStyle: containerStyle,
+};