Utilizing the Element.update() method from the prototype:
[ ... ]
var link_1 = new Element('a').update( '<' );
var link_2 = new Element('a').update( '<<' );
[ ... ]
Encountering a unique issue only in IE:
'link_1' is not defined
Is there a way to insert the string "<" into a prototype element?
It is recommended to use HTML entities for those specific characters instead of using the actual characters, especially since they often mark the beginning of HTML tags.
Instead of update("<"), try using update("<")
Also consider using update("<<")
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