如何在表单提交之前确保文本进程处于onchange状态

I have an input with an onchange event. This event is called appropriately provided the text box looses focus. However, when clicking a button for form submission while the text box still has focus, this onchange event is not being called or it is not finishing before submitting the form. What is the best way to make sure this event is processed before submitting the form?I have an input with an onchange event. This ev