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 Getting Started With ES2015 Using Template Literals String Interpolation

SeHyun Choi
SeHyun Choi
3,441 Points
Posted by SeHyun Choi
SeHyun Choi
3,441 Points

Does interpolation only work with template literal?

When I do 

let name = "sehyun";
document.write(`Hi ${name}`);

It works but

When I do

let name = "sehyun";

document.write("hello " + ${name});

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

That's right, interpolation only occurs inside a template string, and the token syntax is not valid outside of one. In your other example, you can simply concatenate the variable directly:

document.write("hello " + name);