Let's say I have a string of text like:

"Hello, your work pin number is 931234. Again, the number is 931234."

How do I parse out the first 6 digit number that I find? (in this case, 931234)

Let's say I have a string of text like:

"Hello, your work pin number is 931234. Again, the number is 931234."

How do I parse out the first 6 digit number that I find? (in this case, 931234)

• javascript
• regex

• 1 regular-expressions.info/tutorial.html – deceze ♦ Commented Jun 14, 2013 at 10:24

4 Answers 4

var msg = "Hello, your work pin number is 931234. Again, the number is 931234";
(msg.match(/\d{6}/) || [false])[0]; // "931234" 

if no 6-digit occurence is found then the statement will return false

One way for exactly 6 digits;

var s = "Hello, your work pin number is 931234. Again, the number is 931234."

//start or not a digit, 6 digits, not a digit or end
result = s.match(/(^|[^\d])(\d{6})([^\d]|$)/);
if (result !== null)
  alert(result[2]);

var expr = /(\d{6})/;
var digits = expr.match(input)[0];

var text = "Hello, your work pin number is 931234. Again, the number is 931234.".replace(new RegExp("[^0-9]", 'g'), '');
alert(text.substring(0,6));