[Help] Variables created w/o var keyword aren't creating global variables

JavaScript
1

In the JavaScript algorithms & data structure certification’s tutorial titled “Global scope & functions” , it has been mentioned that " Variables which are used without the var keyword are automatically created in the global scope". But when I tried to run the following code in my laptop using node, then it gave error :

function func()
{
hw="Hello World!";
}
console.log(hw);

I would be glad if someone can help me out :cry:

2

is the error that you need to declare all variables?

as global variables are usually unwanted side effects, now usually JavaScript run in strict mode that throws errors for undeclared variables

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