The problem is generated by the the modal component of Bootstrap.
When the modal is about to appear this function is called:
Modal.prototype.enforceFocus = function () {
$(document)
.off('focusin.bs.modal') // guard against infinite focus loop
.on('focusin.bs.modal', $.proxy(function (e) {
if (this.$element[0] !== e.target && !this.$element.has(e.target).length) {
this.$element.trigger('focus')
}
}, this))
}
The function adds a "focusin" event to the document to be sure that the focus is still inside the modal; if the focus goes to another element outside the modal then the latter immediately obtain it back.
Therefore, when you click inside the recaptcha form the focus' conflict causes the Internet Explorer bug.
Anyway, one possible solution is to override that method and disable the focus-back behaviour when a recaptcha component obtain the focus, but this is quite difficult to do because there is no control over the recaptcha html (how can you know if e.target is an element of recaptcha?).
My solution is to completely disable this behavior, to do this just override the enforceFocus function with an empty function:
$.fn.modal.Constructor.prototype.enforceFocus = function () { };
A more elegant solution would be apreciated. :)
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
