Invalid assignment left-hand side, javascript

Answer 1

The assignment (=) is not necessary, you can just use +. There are two other ways to construct multiline strings:

// method 1: use continuation \
 var addhtml = '\
        
 \
            
e["screen_name]
 \
            
 \
            
e["description"]
 \
        
';

//method 2: use an array and join the elements
 var addhtml = [
       '
',
       ' 
e["screen_name]
',
       ' 
',
       ' 
e["description"]
',
       '
'
     ].join('');