Strings in javascript

Hi,

I need some examples of string functions in javascript. My aim is to validate a date value to check that it is in the format that I want it to be in. I will need to an equivilent of vb split function or instr and mid.

Anyone got some examples for me?

there is a javascript split function too. Theres also substring and indexOf that maybe what you require.

Have a read of this. It shows all methods and functions associated with the js string object

http://www.w3schools.com/js/js_string.asp

You can also check my sig for links to the documentation on JavaScript, where you can find everything you need to know about the String object.

You can use regular expressions for patter matching

eg.

Code:

---

//lets check for dd/mm/yyyy

correct_date = "02/03/2002";
incorrect_date = "02/03/02";

if( correct_date.match(/^\d{2}\/\d{2}\/\d{4}$/))
{
  alert("date matches");
}

if( incorrect_date.match(/^\d{2}\/\d{2}\/\d{4}$/))
{
  alert("date matches");
}

---

the previous example uses this regular expression.

^\d{2}\/\d{2}\/\d{4}$

and the regular expression is enclosed by /regex/

^ = match the begiing of the string
\d = any numeric char
{n} = match n times the previous element
\/ = a literal /
$ = match the end of the string