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JavaScript JavaScript Loops, Arrays and Objects Tracking Data Using Objects Accessing Object Properties

Posted by edinjusupovic
edinjusupovic
5,664 Points

Why does he not open the paragraph tag and only ends it with </p> how is that possible?

In this video we are using the following code -->

message += person.skills.join(', ') + '</p>';

I am curious, why does he not open the paragraph tag? It seems like he only closes the tag with </p> like you would with any HTML code, but nowhere is the opening <p> to be found.

Thank you teamtreehouse!

2 Answers

Ryan S
Ryan S
27,276 Points
Ryan S
Ryan S
27,276 Points

Hi Edin,

When using the addition assignment operator (+=) you can keep adding on to the value of a variable instead of replacing it. So when concatenating a long string, you can do it in pieces instead of ending up with one long line.

In this case, the opening paragraph tag was defined on the previous line and it was completed in the final line using addition assignment.

message += '<p>I have ' + person.skills.length + ' skills: ';
message += person.skills.join(', ') + '</p>';

Hope this clears things up.

Saqib Ishfaq
Saqib Ishfaq
13,912 Points
Saqib Ishfaq
Saqib Ishfaq
13,912 Points

or we can use this, it works fine as well: probably just another way of using "message +="

message += '<p>I have ' + person.skills.length + ' skills: </p>'; 
message += person.skills.join(', ') ;