I have a question about the 3D tutorial code

Cocos Creator
#1

You can check “Complete PlayerController” from the following link
ttps://docs.cocos.com/creator/manual/en/getting-started/first-game/#complete-playercontroller

However, I get an error when I use this code.

I think the end of the source code should be “;” or omitted.
However, “.” but some of them don’t give an error. number type might be better.

error3.8.2
error3.8.21107×768 82.2 KB

Is this possible that the version of TypeScript changes depending on the version of cocose and there is no problem?
I am using cocose 3.8.2.

Do I need to modify the code? Is there something wrong with my environment?
Please advise.

#2

Its absolutely a code mistake. Remove “.” or replace them.
And, the number literals in JavaScript can end with a period “.”

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#3

Quick response! Thank you.
." but from now on I will only use “;”!

#4

the code line private _jumpStep:number = 0. doesn’t get an error, because it lacks something, but still matches the coding rule.

the full code line is: private _jumpStep:number = 0.0;

“.” is not the end of a code line. it’s short for “0.0”;

the better way to end a ts line is using ‘;’ or just letting it do nothing.

#5

Yeah, we don’t actually have to terminate statements… some of the engineers on my team do it for readability… but, if you do, use “;” or don’t put anything at all. The “.” after a number is to either specify a floating value or to signify that it is “.0” … nothing follows. Your periods that didn’t throw an error were immediately after an integer… so the computer read it as “.0” Ex. if you had let mynumber = 1. the computer would read it as 1.0… but when you put the decimal point after the parenthesis… you created a syntax error. It didn’t know what to do with your decimal point because it’s not expecting it.

If you want to terminate your statement (the equivalent of ending a sentence with a period in the english language) you can, but you should use “;” instead of a decimal/period. Again, you don’t have to use anything… you absolutely can go to the next line and start your next line of code.

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#6

Thanks for your feedback. I’ve checked the code in the tutorial. I found several code lines mistype the ‘;’ by ‘.’;

All of them are corrected, go and check the code again.

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