find and replace the value if exists in array using typescript map not working [duplicate]

Question

I have an array which have set of values without space so I want find the value and replace it with space For ex:

dateOfJoining --> Date Of Joining

employmentStatus --> EmploymentStatus

let attributes =["dateOfJoining", "employmentStatus"]

let filtered = attributes.filter((item) => {
  if (item === 'dateOfJoining') {
    item = 'Date Of Joining';
  }

  if (item === 'employmentStatus') {
    item = 'Employment Status';
  }

  return item;
});

its always returning filtered =["dateOfJoining", "employmentStatus"] but its needs to return like ["Date Of Joining", "Employment Status"].

I have tried with above approach but its not returning the value as expected. IS their anyway to solve this?

Is .filter the right tool here? Looks like you are trying to transform you array items for which the .map method would be better suited. Try using .map instead and I think your code may work as-is. — CRice
– CRice, Commented Jan 13, 2021 at 15:49

Nadhir Falta · Accepted Answer · 2021-01-13 15:59:21Z

2

You can use the forEach approach better for this use case.
See example below:

let attributes =["dateOfJoining", "employmentStatus"]

 attributes.forEach((item, index) => {
  if (item === 'dateOfJoining') {
    attributes[index] = 'Date Of Joining';
  }

  if (item === 'employmentStatus') {
    attributes[index] = 'Employment Status';
  }
  console.log('-*-*', item);
});

And even better without using any if else and unlimited number of sentences:

let attributes =["dateOfJoining", "employmentStatus", "someOtherText", "andAnotherText"]

attributes.forEach((item, index) => {
  var result = item.replace( /([A-Z])/g, " $1" );
    attributes[index] = result.charAt(0).toUpperCase() + result.slice(1);
});

console.log(attributes);   
// ["Date Of Joining", "Employment Status", "Some Other Text", "And Another Text"]

edited Jan 13, 2021 at 15:59

answered Jan 13, 2021 at 15:54

Nadhir Falta

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3 Comments

Nadhir Falta Over a year ago

@BlockHasher did you try this ?

user324534 Over a year ago

hey Nadhir, it worked as expected, thanks a ton!

Nadhir Falta Over a year ago

@BlockHasher great, can you please mark it as it correct answer

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