将事件侦听器添加到动态创建的元素

Question

I need to add a new event listener to a dynamically created element and I cannot get the listener to attach.

I attempted this method with no success: add event listener on elements created dynamically

 b[0] = document.createElement("INPUT");
 b[0].name = "dt";
 b[0].type = "text";
 b[0].value = "YYYY-MM-DD HH:MM:SS";
 b[0].addEventListener('focus', removeVal);
 b[0].addEventListener('blur', addDTFormat);
 b[0].className = "fields";

Below is the screenshot from Chrome dev tools. I have the add listener method with the correct parameters, but in the properties pane the onblur and onfocus events are null for this element.

Answer 1

It should be focus and blur :

b[0].addEventListener('focus', removeVal);
b[0].addEventListener('blur', addDTFormat);

However IE's attachEvent requires on prefix.