Merge branch 'v4-docs-streamlined' of https://github.com/twbs/bootstrap into v4-docs-streamlined

1 files changed, 14 insertions, 4 deletions

diff --git a/js/src/button.js b/js/src/button.js
index 97ccd4bf0..722fd489d 100644
--- a/js/src/button.js
+++ b/js/src/button.js
@@ -1,6 +1,6 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.5): button.js
+ * Bootstrap (v4.0.0-alpha.6): button.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -15,7 +15,7 @@ const Button = (($) => {
    */
 
   const NAME                = 'button'
-  const VERSION             = '4.0.0-alpha.5'
+  const VERSION             = '4.0.0-alpha.6'
   const DATA_KEY            = 'bs.button'
   const EVENT_KEY           = `.${DATA_KEY}`
   const DATA_API_KEY        = '.data-api'
@@ -66,6 +66,7 @@ const Button = (($) => {
 
     toggle() {
       let triggerChangeEvent = true
+      let addAriaPressed = true
       const rootElement      = $(this._element).closest(
         Selector.DATA_TOGGLE
       )[0]
@@ -89,17 +90,26 @@ const Button = (($) => {
           }
 
           if (triggerChangeEvent) {
+            if (input.hasAttribute('disabled') ||
+              rootElement.hasAttribute('disabled') ||
+              input.classList.contains('disabled') ||
+              rootElement.classList.contains('disabled')) {
+              return
+            }
             input.checked = !$(this._element).hasClass(ClassName.ACTIVE)
             $(input).trigger('change')
           }
 
           input.focus()
+          addAriaPressed = false
         }
 
       }
 
-      this._element.setAttribute('aria-pressed',
-        !$(this._element).hasClass(ClassName.ACTIVE))
+      if (addAriaPressed) {
+        this._element.setAttribute('aria-pressed',
+          !$(this._element).hasClass(ClassName.ACTIVE))
+      }
 
       if (triggerChangeEvent) {
         $(this._element).toggleClass(ClassName.ACTIVE)