view engine

[bradtraversy]

view engine

[gabru-md]

@xubingyang
You are trying to use a completely different View Engine.
You can try changing the syntax according to EJS View.

Try using the code below:

<div class="rows"> <div class="col-lg-12"> <%= if(success_msg.length > 0){ %> <%= success_msg.forEach(function(msg){%> <div class="alert alert-success"><%= msg %></div> <%= }) %> <%= } %> <%= if(error_msg.length > 0){ %> <%= error_msg.forEach(function(err_msg){%> <div class="alert alert-success"><%= err_msg %></div> <%= }) %> <%= } %> </div></div>
In any case of problem please contact.

PS: I am a beginner as well.