Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript Build a Simple Dynamic Site with Node.js Creating a Basic Template Engine in Node.js A Simple Merge Utility

Sougata Ghosh
Sougata Ghosh
6,096 Points
Posted by Sougata Ghosh
Sougata Ghosh
6,096 Points

Merge utility

Just cant figure out this.. please help

index.js 
var utilities = require("./utilities");

var mailValues = {};

mailValues.first_name = "Janet";

var emailTemplate = "Hi %first_name%! Thanks for completing this code challenge :)";

var mergedContent = utilities.merge(emailTemplate, mailValues);

//mergedContent === "Hi Janet! Thanks for completing this code challenge :)";
utilities.js 
function merge(content, values) {

  return content;
}


module.exports.merge = merge;

1 Answer

Unsubscribed User
Unsubscribed User
15,444 Points
Unsubscribed User
Unsubscribed User
15,444 Points

So what you want to do is create a for loop which will pluck out all of the placeholders and replace their contents with their associated value. for example %first_name% with Janet.

This can be achieved as per below:

function merge(content, values) {
  for (placeholder in values) {
    content = content.replace("%"+placeholder+"%", values[placeholder]);
  }
  return content;
}

module.exports.merge = merge;