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javascriptobjectlodash

Dynamically execute function within object

I have an object structure like: 

const object = {
  book: '',
  publisher: '',
  author: 'Sally',
  year: '2018',
}

const functionObj = {
  book: validateBook(),
  publisher: validatePublisher(),
  author: validateAuthor(),
  year: validateYear(),
}

I am trying to validate the values, if and only if they exist by creating an object with functions as the values. So my first thought is this: 

const nonEmptyArray = [];
_.each(object , (v, k) => if (v) nonEmptyAddListingArray.push(k);
console.log(nonEmptyArray); // ['author', 'year']

// Execute each function in the array.
_.each(functionObj, (key) => function.key();

Is this possible to accomplish?

Solution

  • you should just assign the function name; by saying book: validateBook() you would be immediately invoking it. so change the functionObj as below:

    const functionObj = {
  book: validateBook,
  publisher: validatePublisher,
  author: validateAuthor,
  year: validateYear,
}

    Also there need not be a separate array and each, once v is validated instead of pushing to array, just invoke the related function as below

    _.each(object , (v, k) => if (v) functionObj[k]();