I have a string that looks like this:
var stringOriginal = "72157632110713449SomeDynamicText";
I want to separate this string into two substrings:
I want these stored in two separate variables, like this:
var string1 = "72157632110713449"; //First static 17 digits
var string2 = "SomeDynamicText"; // Dynamic Text
Assuming your string is fixed, you can use the substring or substr string functions. The two are very similar:
substr(start, length) obtains a value from the start index to a specified length (or to the end, if unspecified)substring(start, end) obtains a value from the start index to the end index (or the end, if unspecified)So, one way you could do it by mixing and matching the two, is like this:
var string1 = stringOriginal.substring(0, 17);
# interestingly enough, this does the same in this case
var string1 = stringOriginal.substr(0, 17);
var string2 = stringOriginal.substr(17);
If, however, you need a more sophisticated solution (e.g. not a fixed length of digits), you could try using a regex:
var regex = /(\d+)(\w+)/;
var match = regex.exec(stringOriginal);
var string1 = match[1]; // Obtains match from first capture group
var string2 = match[2]; // Obtains match from second capture group
Of course, this adds to the complexity, but is more flexible.
Here you go:
string1 = stringOriginal.substring(0, 17);
string2 = stringOriginal.substring(17, stringOriginal.length);
or
string2 = stringOriginal.substring(17);
//Second parameter is optional. The index where to stop the extraction.
//If second parameter is omitted, it extracts the rest of the string
This will split the string into vars given that the first 17 characters always go into string1 and the remainder into string2.
var string1 = stringOriginal.substring(0,17);
var string2 = stringOriginal.substring(17,stringOriginal.length);
(0,16)? I think it should be (0, 17).Assuming that you want to split the string by separating initial digits from the rest regardless of length :
string = string.match (/^(\d+)(.*)/) || [string, '', ''];
string[1] will hold the initial digits, string[2] the rest of the string, the original string will be in string[0].
If string does not start with a digit, string[0] will hold the original string and string[1] and string[2] will be empty strings.
By changing the code to :
string = string.match (/^(\d*)(.*)/);
strings containing no initial digits will have string[1] empty and string[2] will have the same value as string[0], i.e the initial string. In this case there is no need to handle the case of a failing match.
