perf(Tab): skip rendering empty pane (#7238)

2020-09-23 18:00:26 +08:00
parent 17099d3ac1
commit 68d47fe16a
3 changed files with 37 additions and 2 deletions
@@ -55,9 +55,15 @@ export default createComponent({

  render(h) {
    const { slots, parent, isActive } = this;
-    const shouldRender = this.inited || parent.scrollspy || !parent.lazyRender;
+    const slotContent = slots();
+
+    if (!slotContent) {
+      return;
+    }
+
    const show = parent.scrollspy || isActive;
-    const Content = shouldRender ? slots() : h();
+    const shouldRender = this.inited || parent.scrollspy || !parent.lazyRender;
+    const Content = shouldRender ? slotContent : h();

    if (parent.animated) {
      return (