Problems in java script

Question

I am having trouble in learning javascript.can anyone help me.also how to use css ::after { content: atrr()} and ::before{ content : " "}
plz help

Answer 1

1.I'll help if it wasn't complex

2.It is pseudo element
and forget avout attr. just remember content:'' instead
::after{content:'';display:inline-block;}
::before{content:'';display:inline-block;}

Try to think that ::after and ::before is third element of that htmlelement you currently select to

::after append in front of that element
::before append behind of that element
You might not understand me
so read here
goo.gl/H2lh6t
goo.gl/edXauv