From 17ce8fe6fae614849d4daa65f6ccd91921eac51a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AE=87=E5=A4=A9?= <yutent.io@gmail.com>
Date: Fri, 7 May 2021 20:37:47 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E6=BB=9A=E5=8A=A8=E7=BB=84?=
 =?UTF-8?q?=E4=BB=B6;=E4=B8=8B=E6=8B=89=E7=BB=84=E4=BB=B6?=
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---
 src/form/dropdown.wc | 2 ++
 src/form/option.wc   | 6 +++++-
 src/markd/index.wc   | 4 +++-
 src/scroll/index.wc  | 3 +--
 4 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/form/dropdown.wc b/src/form/dropdown.wc
index 0764ad6..1476a86 100644
--- a/src/form/dropdown.wc
+++ b/src/form/dropdown.wc
@@ -241,6 +241,8 @@ export default class Dropdown {
       this.state.optionShow = false
       this.__OPTIONS__.classList.toggle('active', false)
     })
+
+    $.nextTick(_ => this._updateChildrenStat())
   }
 
   unmounted() {
diff --git a/src/form/option.wc b/src/form/option.wc
index 1c767ec..1f35d17 100644
--- a/src/form/option.wc
+++ b/src/form/option.wc
@@ -119,7 +119,11 @@ export default class Option {
     switch (name) {
       case 'value':
       case 'label':
-        this[name] = val
+        if (val === null) {
+          this[name] = ''
+        } else {
+          this[name] = val
+        }
         break
 
       case 'disabled':
diff --git a/src/markd/index.wc b/src/markd/index.wc
index a00e0eb..34b0f18 100644
--- a/src/markd/index.wc
+++ b/src/markd/index.wc
@@ -209,7 +209,9 @@ export default class Markd {
     } else {
       this.__BOX__.innerHTML = ''
     }
-    this.dispatchEvent(new CustomEvent('ready', { bubbles: true }))
+    this.dispatchEvent(
+      new CustomEvent('ready', { bubbles: true, cancelable: true })
+    )
   }
 
   clear() {
diff --git a/src/scroll/index.wc b/src/scroll/index.wc
index c6d57ce..f46e04c 100644
--- a/src/scroll/index.wc
+++ b/src/scroll/index.wc
@@ -391,8 +391,7 @@ export default class Scroll {
       subtree: true,
       attributeFilter: ['style']
     })
-
-    this._initFn(new Event('mounted'))
+    $.nextTick(_ => this._initFn(new Event('mounted')))
   }
 
   unmounted() {