How to format a regex in javascript

Question

i have this string : 4.5 von 5 Sternen.

My desired output : 4.5/5

What I tried entry.rating.replace(/[a-z A-Z]/g , '/'); Which resulted in 4.5/5/ I dont need that extra slash just the one in the middle dividing the two numbers. I would love some help right now . Thanks in advance.

So that means you use /[a-z A-Z]+/g

Wiktor Stribiżew
– Wiktor Stribiżew

2019-11-06 15:19:26 +00:00
Commented Nov 6, 2019 at 15:19 — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Nov 6, 2019 at 15:19

anubhava · Accepted Answer · 2019-11-06 15:26:16Z

2

You may use match + join here:

var s = '4.5 von 5 Sternen.';
var arr = s.match(/\b\d+(?:\.\d+)?/g);
var out = null;

if (arr != null)
  out = arr.join('/');

console.log(out);
//=> 4.5/5

We are using regex \b\d+(?:\.\d+)? in .match to match a number that may be integer or floating point number.
Once we have array generated from match we use join('/') to get desired output.

edited Nov 6, 2019 at 15:26

answered Nov 6, 2019 at 15:20

anubhava

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1 Comment

Wiktor Stribiżew Over a year ago

You might want to implement some error checking in case of no match. String#match will return null if no match is found.

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