In JavaScript, substitute a blank space within a string with the text "N/A"

Question

In JavaScript, substitute a blank space within a string with the text "N/A"

Looking to replace any empty spaces in a string with the value "N/A." For example, given an array:

var array= ["value1", undefined, "value3"];
var array2= ["value1", "value2", "value3"];
var array3= ["value1", "value2", undefined];

This is a dynamically generated array so the values can vary. I have 3 instances of arrays with different populated values. My goal is to remove all instances of 'undefined' and replace them with "N/A."

array.toString().replace(/\:''/gi, ": \"N/A\"");
outputs: "value1,,value3"; however, I want it to be: "value1, N/A, value3"

I am struggling with using regex to achieve this. Any suggestions on how to accomplish this?

javascript arrays

Answer 1

Answer №1

Avoid regex and opt for the .map method:

let myArray = ["apple", null, "banana"];
const modifiedArray = myArray.map(item => item === null ? 'N/A' : item);
console.log(modifiedArray);

Answer 2

Avoid regex and opt for the .map method:

let myArray = ["apple", null, "banana"];
const modifiedArray = myArray.map(item => item === null ? 'N/A' : item);
console.log(modifiedArray);

Answer 3

Answer №2

Avoid using regular expressions; instead, opt for utilizing the map function or creating your custom implementation. In this scenario, consider implementing the following code snippet:

for(let element in array) if(array[element] === undefined || array[element] === "") array[element] = "N/A";

Answer 4

Avoid using regular expressions; instead, opt for utilizing the map function or creating your custom implementation. In this scenario, consider implementing the following code snippet:

for(let element in array) if(array[element] === undefined || array[element] === "") array[element] = "N/A";

Answer 5

Answer №3

A more efficient approach is to utilize Array.prototype.forEach instead of map because the replacement occurs directly within the array.

var arr = ["item1", undefined, "item3"];

arr.forEach((el, ind) => {
    if (el === undefined) {
        arr[ind] = "N/A";
    }
});

console.log(arr);

Answer 6

A more efficient approach is to utilize Array.prototype.forEach instead of map because the replacement occurs directly within the array.

var arr = ["item1", undefined, "item3"];

arr.forEach((el, ind) => {
    if (el === undefined) {
        arr[ind] = "N/A";
    }
});

console.log(arr);

In JavaScript, substitute a blank space within a string with the text "N/A"

Answer №1

Answer №2

Answer №3

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