In almost all the examples where apex:param
is used in conjunction with apex:actionfunction
I have seen the value
attribute of apex:param
is ""
.
Can someone explain the logic behind this ?
I went through the doc here but still I am not clear about the usage of apex:param tag.
My understanding is apex:param
sets the controller variable mentioned in assignTo
with the value mentioned in the value
attribute.
If my understanding is right then why value
attribute is always set to ""
in apex:param
tag.
Can someone help ?