What is an alternative way to rewrite this regular expression without relying on the deprecated API?

Question

What is an alternative way to rewrite this regular expression without relying on the deprecated API?

My JavaScript code uses a regular expression, myRegexp, to match numbers in a string:

var myRegexp = new RegExp('[0-9]+');

The code then extracts numbers from the string and returns an array:

var string = '123:456';
var nums = [];
while(myRegexp.test(string)) {
    nums.push(myRegexp.exec(string)[0]);
    string = string.replace(myRegexp, '');
}

This should give us an array with two elements: "123" and "456".

However, using RegExp.lastMatch and RegExp.rightContext is not recommended as they are deprecated and non-standard. How can I achieve the same functionality using standard JavaScript API?

Thank you.

javascript regex

Answer 1

Answer №1

To capture all numerical values within a string, you can utilize string.match(/\d/g); to extract each individual digit into a separate array entry, or string.match(/\d+/g); to gather numbers as a whole. None of the approaches you have attempted are necessary for this task…

let string = "2kdkane2kdkie83kdkdk303ldld";

let match = string.match(/\d+/g);
let match1 = string.match(/\d/g);

console.log('numbers:', match);
console.log('single digits:', match1);

Answer 2

To capture all numerical values within a string, you can utilize string.match(/\d/g); to extract each individual digit into a separate array entry, or string.match(/\d+/g); to gather numbers as a whole. None of the approaches you have attempted are necessary for this task…

let string = "2kdkane2kdkie83kdkdk303ldld";

let match = string.match(/\d+/g);
let match1 = string.match(/\d/g);

console.log('numbers:', match);
console.log('single digits:', match1);

Answer 3

Answer №2

Employing the g flag enables a global match, simplifying the process by finding all matches in the string without needing to repeatedly test it.

const str = '123:456'
const regex = new RegExp(/\d+/g);
let numbers = str.match(regex);
console.log(numbers);

Answer 4

Employing the g flag enables a global match, simplifying the process by finding all matches in the string without needing to repeatedly test it.

const str = '123:456'
const regex = new RegExp(/\d+/g);
let numbers = str.match(regex);
console.log(numbers);

What is an alternative way to rewrite this regular expression without relying on the deprecated API?

Answer №1

Answer №2

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