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JavaScript JavaScript Basics (Retired) Working With Numbers The Mad Libs Challenge Revisited

Zherui Li
Zherui Li
993 Points
Posted by Zherui Li
Zherui Li
993 Points

the Meaning of '['questions+'questions left]'???

I saw someone said to treat '[' and ']' as strings, but if you write the code like : questions+questions left']' . It doesn't work!

could someone give me the official solution about this issue??

4 Answers

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

That's only part of the code line. The entire line is:

var questionsLeft = ' [' + questions + ' questions left]';

This creates a string that has brackets in it (assuming you already have a variable named questions), which will be printed out later. Anything enclosed in quotes is a string.

:information_source: Brackets by themselves (not in a string) are used for indexing. I expect that will be covered later in the course.

Zherui Li
Zherui Li
993 Points
Zherui Li
Zherui Li
993 Points

Thank you Steven, but if I treat it as string, and put the third quote just in front of the second bracket like this

var questionsLeft = ' [' + questions + questions left ' ] '; this code doesn't work anymore. why?

Kevin Baxter
Kevin Baxter
5,599 Points
Kevin Baxter
Kevin Baxter
5,599 Points

Omg I totally get it now I was looking at the quotes in the wrong way.

y1n5
y1n5
2,626 Points
y1n5
y1n5
2,626 Points

Thanks Steven and all; this was not clear in the lecture. The pink is perfect and helps to see!

Sven Harder
Sven Harder
14,943 Points
Sven Harder
Sven Harder
14,943 Points

questions left is a string and a part of the sentence -> it must be inside of quotes. Only questions is outside of the quotes, because it's a variable.