multiple if but only runs the first one? javascript

Question

so I wrote this for my first computer science class assignment. However, the page returns that if input is gpa(A), the results is 3. It's like only the first conditionals if is running. I switched around the A, B ,C and 2, 3, 4 but it's always the first if no matter what the gpa(r) is. How does this happen?

    var gpa = function(r) {
        if (r = "B"){
            return 3;
        } 
        if (r = "C"){
            return 2;
        }
        if (r = "A"){
            return 4;
        }
     }

`=` is an assignment operator, `===` is a comparison operator — Paul S., Sep 03 '15 at 15:23

score 7 · Accepted Answer · edited May 23 '17 at 10:26

7

In order to compare between two values you should use == or === and not = which assigns a value.

var gpa = function(r) {
    if (r == "B"){
        return 3;
    } 
    if (r == "C"){
        return 2;
    }
    if (r == "A"){
        return 4;
    }
 }

Read here about the difference between == and ===.

edited May 23 '17 at 10:26

Community

1
1

answered Sep 03 '15 at 15:23

Amir Popovich

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3

Even better, avoid using `==` and use `===`. – Quentin Roy Sep 03 '15 at 15:24
1

I think the word _"need"_ is too strong here, `>` and `<` are also comparison operators. – Paul S. Sep 03 '15 at 15:26

multiple if but only runs the first one? javascript

1 Answers1