Populate event.timeStamp if it's 0 or missing

Works around an iOS bug (which I couldn't reproduce). Fixes madrobby#1160
LEV7n · Jul 13, 2016 · bf2f1c8 · bf2f1c8
1 parent 623b37d
commit bf2f1c8
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diff --git a/src/event.js b/src/event.js
@@ -139,6 +139,8 @@
         event[predicate] = returnFalse
       })
 
+      event.timeStamp || (event.timeStamp = Date.now())
+
       if (source.defaultPrevented !== undefined ? source.defaultPrevented :
           'returnValue' in source ? source.returnValue === false :
           source.getPreventDefault && source.getPreventDefault())

diff --git a/test/event.html b/test/event.html
@@ -207,6 +207,15 @@ <h1>Zepto Event unit tests</h1>
         t.assertIdentical(this.el.get(0), currentTarget)
       },
 
+      testDelegateEventTimestamp: function(t){
+        var timestamp
+        $(document).on('click', 'div', function(e){
+          timestamp = e.timeStamp
+        })
+        click($('<span>').appendTo(this.el))
+        t.assert(timestamp > 0, 'timestamp was ' + timestamp)
+      },
+
       testPreventDefaultWithDelegatedEvent: function(t){
         var isDefaultPrevented, span = $('<span>').appendTo(this.el)