It appears that
document.createElement('iframe');
automatically creates head
and body
tags.
I've tested this in Firefox,Chrome and IE9+.
Is this the standard or other browsers might not react like this. I'm asking this because I wanna know if I need to check if those tags are created before inserting some elements in them. If I can avoid the check condition I'll be more than happy because I want to keep my js code as light as I can.
As far as I now, it's not standard, but supported by all common browsers. The standard only defines that there is a HTML tag, so
document.documentElement
is supported. You can check for:
document.documentElement.children.length > 0
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.