为什么 VS 没有给我与 DevTools 中的控制台相同的结果？

Question

I'm sorry if this questions is being raised but I'm really new to coding and started to have the first difficult issue and can't figure it out. I have write a simple code like this because I have to learn the return command:

function multiplyByNineFifths (number) {
    return number *(9/5);
};

function getFahrenheit (celcius) {
    return multiplyByNineFifths (celcius) + 32;
};

getFahrenheit(15);

but when when I want to run the code in VS it says:

[Running] node "c:\Users\Oerd Bej\Desktop\JavaScript
exercises\tempCodeRunnerFile.js"
[Done] exited with code=0 in 0.088 seconds`

while in DevTools in console it runs perfectly and it gives me the right answer which is 59.

Please can you help me to figure it out what should I do, I have installed node.js and all the necessary plug in in VS but dont know what is wrong or what is the right question that I have to ask in order to understand it well. Every error in VS it breaks my heart

Answer 1

It's because logging is a little different in Chrome than in Node. If you type console.log(3) in Chrome, it will log 3 , and then the return value of console.log which is undefined (because console.log doesn't return anything). Chrome will always automatically log the function's return value. Node doesn't. It will only log 3 . Node executes the getFahrenheit function, but this function doesn't return anything. It just computes a number in memory, that's it, so nothing gets displayed. If you want to see the result of this operation you need to log it with console.log(getFahrenheit(15)) .