Question 136733 in Javascript Question posted in
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Javascript remove semicolon from last string

const arr = [
    {
        "id": "753311",
        "role": "System Of Record (SOR)",
        "license": "Target",
        "DC": "Client · L2 (Inactive), Account · L1",
        "managedGeography": "North America · L2, International · L2",
        "managedSegment": "Institutional Clients Group [L3], Discontinued Ops [L2]",
        "checked": true,
        "checkBoxPatched": true
    },
    {
        "id": "752872",
        "role": "Authorized Redistributor (AR)",
        "license": "Interim",
        "DC": "Holding · L1, Document · L1, Compliance · L1",
        "managedGeography": "Unspecified",
        "managedSegment": "Unspecified",
        "checked": true,
        "checkBoxPatched": true
    },
    {
        "id": "752583",
        "role": "Authorized Redistributor (AR)",
        "license": "Target",
        "DC": "Agreement · L1, Asset · L1, Activity · L1, Account · L1",
        "managedGeography": "Unspecified",
        "managedSegment": "Unspecified"
    }
]

let adsList = arr.map(selectedObj => {
        if (selectedObj.checked) {
          return selectedObj.role + ", " + selectedObj.license + ", " + selectedObj.DC + ", " + selectedObj.managedGeography + ", " + selectedObj.managedSegment + ";n"
        } else {
          return '';
        }
      }).filter((str) => str.length !== 0).join('n');
      
 console.log(adsList)

Hi there I’ve an array and I’m basically returning the string if object contains checked property and separating them with semicolon, but need to remove for the last one.

I’m not sure how do I remove the last semicolon after unspecified from the output in this case, any leads would be quite helpful.

Tags:

4

Answers


  1. 0

    You can use the slice() method to remove the last character from the resulting string:

    let adsList = arr.map(selectedObj => {
  if (selectedObj.checked) {
    return selectedObj.role + ", " + selectedObj.license + ", " + selectedObj.DC + ", " + selectedObj.managedGeography + ", " + selectedObj.managedSegment + ";n"
  } 
  return '';
}).filter((str) => str.length !== 0).join('n').slice(0, -2);

console.log(adsList)
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  2. 0

    You can use the following regular expression:

    /;(s|\n)*$/

    To find a semicolon in the end of the string, then replace it with an empty string.

    The regular expression has the following meaning:

    ; matches the literal semicolon

    (s|\n)* matches one or more white spaces, or n literals

    $ matches the end of the string

    const arr = [
    {
        "id": "753311",
        "role": "System Of Record (SOR)",
        "license": "Target",
        "DC": "Client · L2 (Inactive), Account · L1",
        "managedGeography": "North America · L2, International · L2",
        "managedSegment": "Institutional Clients Group [L3], Discontinued Ops [L2]",
        "checked": true,
        "checkBoxPatched": true
    },
    {
        "id": "752872",
        "role": "Authorized Redistributor (AR)",
        "license": "Interim",
        "DC": "Holding · L1, Document · L1, Compliance · L1",
        "managedGeography": "Unspecified",
        "managedSegment": "Unspecified",
        "checked": true,
        "checkBoxPatched": true
    },
    {
        "id": "752583",
        "role": "Authorized Redistributor (AR)",
        "license": "Target",
        "DC": "Agreement · L1, Asset · L1, Activity · L1, Account · L1",
        "managedGeography": "Unspecified",
        "managedSegment": "Unspecified"
    }
]

let adsList = arr.map(selectedObj => {
        if (selectedObj.checked) {
          return selectedObj.role + ", " + selectedObj.license + ", " + selectedObj.DC + ", " + selectedObj.managedGeography + ", " + selectedObj.managedSegment + ";n"
        } else {
          return '';
        }
      }).filter((str) => str.length !== 0).join('n').replace(/;(s|\n)*$/, '');
      
 console.log(adsList)
    Login or Signup to reply.
  3. 0

    You could update the code to join the array with ;n and if you want to keep the extra line in between then ;nn

    let adsList = arr.map(selectedObj => {
    if (selectedObj.checked) {
        return selectedObj.role + ", " + selectedObj.license + ", " + selectedObj.DC + ", " + selectedObj.managedGeography + ", " + selectedObj.managedSegment;
    } else {
        return '';
    }
}).filter((str) => str.length > 0).join(';n');

    const arr = [{
    "id": "753311",
    "role": "System Of Record (SOR)",
    "license": "Target",
    "DC": "Client · L2 (Inactive), Account · L1",
    "managedGeography": "North America · L2, International · L2",
    "managedSegment": "Institutional Clients Group [L3], Discontinued Ops [L2]",
    "checked": true,
    "checkBoxPatched": true
  },
  {
    "id": "752872",
    "role": "Authorized Redistributor (AR)",
    "license": "Interim",
    "DC": "Holding · L1, Document · L1, Compliance · L1",
    "managedGeography": "Unspecified",
    "managedSegment": "Unspecified",
    "checked": true,
    "checkBoxPatched": true
  },
  {
    "id": "752583",
    "role": "Authorized Redistributor (AR)",
    "license": "Target",
    "DC": "Agreement · L1, Asset · L1, Activity · L1, Account · L1",
    "managedGeography": "Unspecified",
    "managedSegment": "Unspecified"
  }
]

let adsList = arr.map(selectedObj => {
  if (selectedObj.checked) {
    return selectedObj.role + ", " + selectedObj.license + ", " + selectedObj.DC + ", " + selectedObj.managedGeography + ", " + selectedObj.managedSegment;
  } else {
    return '';
  }
}).filter((str) => str.length > 0).join(';nn');

console.log(adsList)
    Login or Signup to reply.
  4. 0

    Don’t add the semi-colon in the map call, but use it as separator in the final join call.

    Not an issue, but:

    • you can use Boolean as filter callback function.
    • Instead of returning '', you can return .checked when it is falsy, which allows you to return one expression without if..else.
    • Maybe use a template string for concatenating the properties with commas.
    const arr = [{"id": "753311","role": "System Of Record (SOR)","license": "Target","DC": "Client · L2 (Inactive), Account · L1","managedGeography": "North America · L2, International · L2","managedSegment": "Institutional Clients Group [L3], Discontinued Ops [L2]","checked": true,"checkBoxPatched": true},{"id": "752872","role": "Authorized Redistributor (AR)","license": "Interim","DC": "Holding · L1, Document · L1, Compliance · L1","managedGeography": "Unspecified","managedSegment": "Unspecified","checked": true,"checkBoxPatched": true},{"id": "752583","role": "Authorized Redistributor (AR)","license": "Target","DC": "Agreement · L1, Asset · L1, Activity · L1, Account · L1","managedGeography": "Unspecified", "managedSegment": "Unspecified"}];

let adsList = arr.map(obj =>
    obj.checked && `${obj.role}, ${obj.license}, ${obj.DC}, ${obj.managedGeography}, ${obj.managedSegment}`
).filter(Boolean).join(';nn');
      
 console.log(adsList)
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