I am a learner. When I try to assign value to a variable as follows it doesn't work. Want to know the reason.
this doesn't work:
const w =
if (2 > 1) {
return 1500;
} else {
return 2500;
}
However this works:
const w = function() {
if (2 > 1) {
return 1500;
} else {
return 2500;
}
}()
Is there a better approach?
In JavaScript we use if in statements (that's why it's called if statement). However, what you have after const w = is an expression. Because of that, your first snippet didn't work: you cannot use if where JavaScript expects an expression.
That being said, you should use the "analog" of if for expressions, which is the conditional operator.
In your case:
const w = 2 > 1 ? 1500 : 2500;
console.log(w)Alternatively, if you (for whatever reason) want to keep the if statement:
let w;
if (2 > 1) {
w = 1500
} else {
w = 2500
};
console.log(w)You cannot use a statement to assign into a variable. For the alternate solution use conditional/Ternary operator
Syntax
const var_name = condition ? true_value : false_value
Example
const w = 2 > 1 ? 1500 : 2500
returnkeyword is used to return a value from a function not to assign a value to some other variable or constant.