From: Evan You <yyx990803@gmail.com>
Date: Fri, 11 Oct 2019 22:59:39 +0000 (-0400)
Subject: fix(runtime-dom): cast  to true for boolean props
X-Git-Tag: v3.0.0-alpha.0~483
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=59e18e54781564417e22a97d2eab5520e5661a5c;p=thirdparty%2Fvuejs%2Fcore.git

fix(runtime-dom): cast  to true for boolean props
---

diff --git a/packages/runtime-dom/src/modules/props.ts b/packages/runtime-dom/src/modules/props.ts
index 0e87ffcd1e..fbaaac2c8e 100644
--- a/packages/runtime-dom/src/modules/props.ts
+++ b/packages/runtime-dom/src/modules/props.ts
@@ -18,5 +18,10 @@ export function patchDOMProp(
     // non-string values will be stringified.
     el._value = value
   }
-  el[key] = value == null ? '' : value
+  if (value === '' && typeof el[key] === 'boolean') {
+    // e.g. <select multiple> compiles to { multiple: '' }
+    el[key] = true
+  } else {
+    el[key] = value == null ? '' : value
+  }
 }