variable in a string not working in javascript [duplicate]

Question

here is the code:

const textIn = fs.readFileSync('./txt/input.txt', 'utf-8');

const textOut = 'this is the addition: ${textIn}, \nCreated on ${Date.now()}';

fs.writeFileSync('./txt/output.txt', textOut);

The content of the input.txt file is "hello world". What should happen is the content of the output.txt file should read "this is the addition: hello world 1614606057967.

but it reads...

this is the addition: ${textIn}

Created on ${Date.now()}

Any ideas why?

Use backticks(`) not inverted comma

Harsh Chaturvedi
– Harsh Chaturvedi

2021-03-01 14:16:25 +00:00
Commented Mar 1, 2021 at 14:16 — Harsh Chaturvedi
– Harsh Chaturvedi, Commented Mar 1, 2021 at 14:16

Broots Waymb · Accepted Answer · 2021-03-01 14:13:26Z

3

According to these Mozilla docs, you need to enclose your string in backticks, not single quotes.

So you want:

const textOut = `this is the addition: ${textIn}, \nCreated on ${Date.now()}`;

answered Mar 1, 2021 at 14:13

Broots Waymb

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Broots Waymb Over a year ago

@sunday - glad I could help! If this answer solved your issue, you could 'accept' it by clicking the checkmark near the upvote and downvote buttons to let others know this solution works.

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