Parsing number from string

Question

How do I split selected value, seperate the number from text in jQuery?

Example:

myselect contains c4

Just get only the number 4.

$('select#myselect').selectToUISlider({
      sliderOptions: {
        stop: function(e,ui) {
          var currentValue = $('#myselect').val();
          alert(currentValue);
          var val = currentValue.split('--)
          alert(val);

        }
      }
    });

There's a syntax error in the line above the last alert. Your second hyphen should be the ending single quote mark. With that said, is the value actually "c-4" rather than "c4" as you had said? If not, why are you splitting on '-'? — CashIsClay, Sep 01 '11 at 14:58

Joseph Yaduvanshi · Accepted Answer · 2011-09-01T21:09:04.817

11

You can use regex to pull only the numbers.

var value = "c4";
alert ( value.match(/\d+/g) );

edit: changed regex to /\d+/g to match numbers greater than one digit (thanks @Joseph!)

edited Sep 01 '11 at 21:09

answered Sep 01 '11 at 14:56

Joseph Yaduvanshi

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2

that'll work. Only thing I'd add to that is use the + wildcard after \d to include greater than 1 digit numbers – Joseph Marikle Sep 01 '11 at 14:58
@JosephMarikle "greater than **or equal to** 1 digit numbers" – rinogo Mar 04 '21 at 16:04

score 4 · Answer 2 · answered Sep 01 '11 at 14:59

1) if it's always : 1 letter that followed by numbers you can do simple substring:

'c4'.substring(1); // 4 
'c45'.substring(1); // 45

2) you can also replace all non-numeric characters with regular expression:

'c45'.replace(/[^0-9]/g, ''); // 45
'abc123'.replace(/[^0-9]/g, ''); // 123

score 1 · Answer 3 · answered Sep 01 '11 at 15:00

1

If you know that the prefix is always only one character long you could use this:

var val = currentValue.substr(1);

answered Sep 01 '11 at 15:00

Muleskinner

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Parsing number from string

3 Answers3