CODEWITHSUNDEEP
javascriptregex
soccerway
soccerway

Reputation: 11951

How can I remove the second occurrence of the decimal number using regex

How can I remove the second occurrence of the decimal number $275.75 in the received subTotal using regex and include $in the regex ? But now I am getting NaN as output.

Expected output:

Here is the result: $275.75

let subTotal = "\n \n Sub-Total \n \r \r $275.75 \n\n $275.75";
let myTotal = Number(subTotal.replace(/\n|\r|[^0-9\.]+/g, ""));

console.log("Here is the result: "+myTotal);

Upvotes: 0

Views: 338

Answers (3)

Andy
Andy

Reputation: 63524

Instead of doing a replace (since you're not using the string in your output) match might be a better alternative. Just grab the first match with /\$[0-9\.]+/.

let subTotal = "\n \n Sub-Total \n \r \r $275.75 \n\n $275.75";

let myTotal = subTotal.match(/\$[0-9\.]+/);

console.log(`Here is the result: ${myTotal}`);

Upvotes: 1

DecPK
DecPK

Reputation: 25408

You can use

\b\d+\.\d+\b

enter image description here

and get all numbers with a decimal point in an array and get the specific element using array index

let subTotal = "\n \n Sub-Total \n \r \r $275.75 \n\n $275.75";
let myTotal = subTotal.match(/\b\d+\.\d+\b/g);
console.log(myTotal);
console.log(`Here is the result: $${myTotal[0]}`);

or

\$\b\d+\.\d+\b/g

enter image description here

let subTotal = "\n \n Sub-Total \n \r \r $275.75 \n\n $275.75";
let myTotal = subTotal.match(/\$\b\d+\.\d+\b/g);
console.log(myTotal);
console.log("Here is the result: " + myTotal[0]);

Upvotes: 2

MrMythical
MrMythical

Reputation: 9041

This doesn’t use regex, but it still returns what you want. This is the example code from this site. It uses Number.prototype.toFixed

function financial(x) {
  return Number.parseFloat(x).toFixed(2);
}

console.log(financial(123.456));
// expected output: "123.46"

console.log(financial(0.004));
// expected output: "0.00"

console.log(financial('1.23e+5'));
// expected output: "123000.00"

What you may want

let myTotal = financial(subTotal.match(/[\d+\.]/)[0])
console.log("Here is the result: $"+myTotal);

Upvotes: 0

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