Is there a way to pass part of inputs into function?

Question

Suppose I have a function as this:

function test(a, b, c, d) {
...
}

Is there a way that I can pass my inputs into the function as follows:

test(a:1,c;2)

JavaScript doesn’t support passing function arguments by name. Are you looking for `test(1, undefined, 2, undefined)`? — Ry-, Jul 14 '17 at 04:04
you can do something like `function test(o={a:1,b:2,c:3, d:4 })` then call `test({a: 1, c:2 })` — T4rk1n, Jul 14 '17 at 04:07
@Ryan Thanks for your comment. I know that will work but I just want to know is there exist a way allowing me to pass certain inputs into function. — Henry Hung, Jul 14 '17 at 04:07

score 0 · Answer 1 · answered Jul 14 '17 at 04:07

0

Named values doesn't support in a function, you have 2 options:

Pass undefined value to unused variable like test(1, undefined, 2, undefined)
Modified the parameters as an object like test(obj) and use obj.a, obj.b,... to pass the values

answered Jul 14 '17 at 04:07

huydq5000

score 0 · Answer 2 · answered Jul 14 '17 at 04:18

You can not as you exactly suggested, but you could have your function take an object with your arguments as fields.

Ex:

function test(myArguments) {
    if (myArguments.a) {
      // do something with myArguments.a
    }
    ...
}

Call as:

test({a: 1, b: 2});

2 Answers2