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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops A Closer Look at Loop Conditions

Posted by Silvia Ramos
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Silvia Ramos
Front End Web Development Techdegree Graduate 18,318 Points

Calling variables ++ ?

Hey!

I have got confused with something, but this was not mentioned on the previous videos of front end track, or perhaps I have missed something somehow?

Anyway, the teachers states the following:

document.write("<p> The random number was + randonNumber + </p>");

Instead of --> ${} :

document.write(`<p> The randon number was ${randonNumber} </p>`);

Can we use both, am I missing something or am I completely wrong?

Thank you :)))

5 Answers

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

There's rarely only one way to accomplish something in programming.

The first example uses concatenation, but it's missing some quote marks. Here it is corrected:

document.write("<p> The random number was " + randonNumber + " </p>");

The second example uses a template literal to perform interpolation. Both techniques are valid, and both examples produce the same result.

Harris Keka
PLUS
Harris Keka
Courses Plus Student 3,611 Points
Harris Keka
Harris Keka
Courses Plus Student 3,611 Points

Perfect, happy Coding Silvia

Silvia Ramos
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Silvia Ramos
Front End Web Development Techdegree Graduate 18,318 Points

Thank you Harris! I am struggling a lot with JS :( I had to stop the course for a while and practise exercises, cause I am not going anywhere with this... I found this web with exercises, i add it on here in case it is any useful for you too ;) https://www.w3resource.com/javascript-exercises/javascript-conditional-statements-and-loops-exercises.php#EDITOR

Harris Keka
PLUS
Harris Keka
Courses Plus Student 3,611 Points
Harris Keka
Harris Keka
Courses Plus Student 3,611 Points

To avoid concatenation errors with the + and "" it is advisable more readable and simple with template literal. Both " " + " " all works well. They both will give you the same results. For me using template literal is easier as well.

Silvia Ramos
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Silvia Ramos
Front End Web Development Techdegree Graduate 18,318 Points

Thank you :) I find it easier and more visual template literals. And my bad, the course does explain concatenation... I just recap the basics and found out it was one of the very first thinks explained.

Harris Keka
PLUS
Harris Keka
Courses Plus Student 3,611 Points
Harris Keka
Harris Keka
Courses Plus Student 3,611 Points

Hi Silva, thanks for sharing with me, I will obviously use this as well for practice exercises. Thanks again.

Alex Smith
Alex Smith
5,133 Points
Alex Smith
Alex Smith
5,133 Points

Thanks Silvia, I'm going to have to take a look at this, as well.

Silvia Ramos
.a{fill-rule:evenodd;}techdegree seal-36
Silvia Ramos
Front End Web Development Techdegree Graduate 18,318 Points

No worries, i found it really helpful, hope you do too :))))