Question 222058 in Javascript Question posted in
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Javascript – Passing multiple params and multiple functions into a function

I have a function

 await mainFunction(function1, function2, function3)

I also want to pass multiple functions into the mainFunction

const mainFunction =   async (function1, function2, function3) =>  async ({ param1, param2, param3}) => {

const params = { param1, param3, param3};

How do I do this without passing it as another param?

Tags:

3

Answers


  1. 0

    If I understand you right, you want to pass indefinite number of arguments to your main function, so you can use the ...rest parameter.

    The rest parameter syntax allows a function to accept an indefinite number of arguments as an array, providing a way to represent variadic functions in JavaScript. (from MDN)

    Note. You can call the rest parameter whatever you want.

    So in your code it will look something like this:

    const mainFunction = async (...functions) => {
  // DO SOMETHING WITH THE PARAMS ARRAY
}

    You can read more about it here:

    https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters

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  2. 0

    You can try using Rest parameters (...) that allows to pass any number of functions as an array:

    const mainFunction = async (...functions) => {
  const params = { param1: value1, param2: value2, param3: value3 };

  //loop through functions and call them
  for (const func of functions) {
    await func(params);
  }
};
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  3. 0

    if you want to maintain your current syntax you can do it like this

    const mainFunction = (function1, function2, function3) => async ({ param1, param2, param3 }) => {
  const params = { param1, param2, param3 };
  console.log(params);
  await function1(param1);
  await function2(param2);
  await function3(param3);
};

const function1 = (param) => console.log('function1', param);
const function2 = (param) => console.log('function2', param);
const function3 = (param) => console.log('function3', param);

const paramsObject = {
  param1: 'Value 1',
  param2: 'Value 2',
  param3: 'Value 3',
};

const innerFunction = mainFunction(function1, function2, function3);
innerFunction(paramsObject);
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