Discussion on the issue of default selection of checkbox created by JS in IE_javascript skills

Test browsers: ie8 (compatible and incompatible modes), ff6.

Copy code The code is as follows:

var chk = document.createElement("input");
chk.setAttribute("type","checkbox");
container.appendChild(chk);
chk.setAttribute("checked",true);

Above The code does not always work in ie8 compatibility mode and ff6, but it does not work in ie8 incompatibility mode. It only works after appendChild and then setting the checked value, as follows:

Copy code The code is as follows:

var chk = document.createElement("input");
chk.setAttribute("type ","checkbox");
chk.setAttribute("checked",true);
container.appendChild(chk);

It seems that the above paragraph is reversed.