numbers

Suggest solution for removing or truncating leading zeros from number(any string) by javascript,jquery. You can use a regular expression that matches zeroes at the beginning of the string: s = s.replace(/^0+/, ''); I would use the Number() function: var str = "00001"; str = Number(str).toString(); >> "1" Or I would multiply my string by 1 var str = "00000000002346301625363"; str = (str * 1).toString(); >> "2346301625363" Maybe a little late, but I want to add my 2 cents. if your string ALWAYS represents a number, with possible leading zeros, you can simply cast the string to a number by using

Seeing as Java doesn't have nullable types, nor does it have a TryParse(), how do you handle input validation without throwing an exceptions? The usual way: String userdata = /*value from gui*/ int val; try { val = Integer.parseInt(userdata); } catch (NumberFormatException nfe) { // bad data - set to sentinel val = Integer.MIN_VALUE; } I could use a regex to check if it's parseable, but that seems like a lot of overhead as well. What's the best practice for handling this situation? EDIT: Rationale: There's been a lot of talk on SO about exception handling, and the general attitude is that

I need to create a random number with x amount of digits. So lets say x is 5, I need a number to be eg. 35562 If x is 3, then it would throw back something like; 463 Could someone show me how this is done? You can use rand() together with pow() to make this happen: $digits = 3; echo rand(pow(10, $digits-1), pow(10, $digits)-1); This will output a number between 100 and 999. This because 10^2 = 100 and 10^3 = 1000 and then you need to subtract it with one to get it in the desired range. If 005 also is a valid example you'd use the following code to pad it with leading zeros: $digits = 3; echo

I need to generate unique id numbers on the fly using javascript. In the past, I've done this by creating a number using time. The number would be made up of the four digit year, two digit month, two digit day, two digit hour, two digit minute, two digit second, and three digit millisecond. So it would look something like this: 20111104103912732 ... this would give enough certainty of a unique number for my purposes. It's been a while since I've done this and I don't have the code anymore. Anyone have the code to do this, or have a better suggestion for generating a unique ID? If you just want