Pass variables in calling javascript functions?

Question

I wanna pass in some variables to my functions like int, string, and etc. I'm a C# developer and is very new in JS.

In C# we normally call a function with:

function computeGrade(int grade)
{
...
}

computeGrade(90);

I understand that js uses var that can either be a string, int, etc. However when I try:

function ComputeGrade(var grade)
{
...
}

it gives me an error that it failed to initialize the function.
Forgive me for being too naive with js. Thanks a ton!

In JavaScript, you don't specify the type of the parameter. Try this -> function ComputeGrade(grade) { ... }. This enables you to pass anything as the 'grade' parameter (strings, numbers, functions, etc). — thiag0
– thiag0, Commented Aug 27, 2019 at 2:27
@John edited it :) thanks a lot. And sorry for those unnecessary tags... — Dran Dev
– Dran Dev, Commented Aug 27, 2019 at 2:32
Thank you for your edit :-) On a related topic, it might be of interest to you that as of ECMAScript6 you can use let. There is a slight difference between var and let, but let behaves more like C# variables do with regards to scoping. Personally, I'd argue that let is a better way to go these days. — ProgrammingLlama
– ProgrammingLlama, Commented Aug 27, 2019 at 2:34
@John I've heard let too but was quite unsure on whether what's the main difference between the two. Thanks for the heads up! :) I'll try utilizing let — Dran Dev
– Dran Dev, Commented Aug 27, 2019 at 2:39

himank · Accepted Answer · 2019-08-27 02:31:57Z

3

In js variables are just untyped name bindings. So you don't need to tell what a variable is capable of storing. Actually It just refers to any type of value.

function ComputeGrade(grade)
{
...
}

So here, grade is just a name binding. It does not matter what kind of value you pass this function. It will bind to grade variable.

answered Aug 27, 2019 at 2:31

himank

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Comments

karmakaze · Accepted Answer · 2019-08-27 02:23:04Z

1

Use var for declaring local variables. For function arguments just use the param name without var.

answered Aug 27, 2019 at 2:23

karmakaze

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1 Comment

Dran Dev Over a year ago

Thanks so much! This actually clarified it :D

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