event delegator get issues on Safari 10.1 . works on Chrome and Firefox

[DemonCloud]

when the input bind input event like:

$(".father").on("input",".child",func)

Safari device not responding.

see this page re-show the bug (example-2(two-way-data-binding):

https://demoncloud.github.io/aix/#introduce

[madrobby]

This may be related to #1256.

@DemonCloud Please provide any errors/warnings from the Safari console.

[hym116]

Object.defineProperties(e, {
data:{
writable: true
}
});
e.data = data;
Is this right?
changing the same place as
6fd163c