What concepts have you found most devs tend to struggle with?
By far is how values get passed into functions.
const firstName = 'Wes'; function sayHello(name) { console.log(`Hello ${name}`); } sayHello(firstName);
Why is it name and not firstName?!
name
firstName
Seems to simple to anyone programming for a while, but it's often a cause for confusion in my students.
References (arrays, objects) VS values (strings, numbers) is another one.
Truthy/falsy was another one but I've got pretty good at explaining that :)
Beginner here, is this because whatever you put in the brackets after sayHello is what is passed, 'name' is essentially a placeholder for the value you are passing into it?
Correct. name is the parameter scoped to that function.
That's really good info. I never would have guessed that. Thanks for answering!
This brings me back. I remember this tripping me up early on. It lead to some behavior like always using the same name for both things just in case.
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What concepts have you found most devs tend to struggle with?
By far is how values get passed into functions.
Why is it
nameand notfirstName?!Seems to simple to anyone programming for a while, but it's often a cause for confusion in my students.
References (arrays, objects) VS values (strings, numbers) is another one.
Truthy/falsy was another one but I've got pretty good at explaining that :)
Beginner here, is this because whatever you put in the brackets after sayHello is what is passed, 'name' is essentially a placeholder for the value you are passing into it?
Correct.
nameis the parameter scoped to that function.That's really good info. I never would have guessed that. Thanks for answering!
This brings me back. I remember this tripping me up early on. It lead to some behavior like always using the same name for both things just in case.