CODEWITHSUNDEEP
javascriptjqueryregex
Antti
Antti

Reputation: 313

Split from number with possible decimals

I'm trying to split a string from where a number is encountered. The problem is the number can sometimes have decimals in it.

I tried this without any luck:

str = "hello there can sometimes be decimals like 1.5 in here"
var parts = str.split(/\d*\.?\d*/);

The intended result would be an array with everything before the number in first position, then the number, then the rest of the string.

What am I doing wrong?

Upvotes: 4

Views: 59

Answers (2)

Tomer Klein
Tomer Klein

Reputation: 446

var str = 'hello there can sometimes be decimals like 1.5 in here';
var firstDigit = str.indexOf(str.match(/\d/))-1 ;

function splitValue(value, index) {
var parts =[value.substring(0, index),value.substring(index)] ;  
   return parts;
}

Upvotes: 0

Scimonster
Scimonster

Reputation: 33399

I don't think there's a one-liner for this, but something like this should work.

First the regex needs to be fixed to use + instead of * by the first \d, to make sure it matches the first part:

/\d+\.?\d*/

Then, we need to extract the number, split, and add it into the array:

str = "hello there can sometimes be decimals like 1.5 in here"
var num = str.match(/\d+\.?\d*/);
var parts = str.split(/\d+\.?\d*/);
parts.splice(1,0,num);

Upvotes: 4

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