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jamert (Programmer) (OP)
12 Feb 08 23:48
how whould one get the first 2 characters of a string?  thanks

var d = "asdfasdfasdfasdf";
if (d.length>2)
  get first 2 characters here
Helpful Member!  marouanemeft (Programmer)
12 Feb 08 23:51
jamert (Programmer) (OP)
12 Feb 08 23:57
kaht (Programmer)
13 Feb 08 9:45
jamert, this is a complete SW post but I figured I'd post it as an alternative to the above solution since it's what I always use.

The substring method requires 2 parameters.  The position of the first character in the string to pull, and the position of the last character in the string to pull.  However, at a glance I've always found the substring method to be confusing.  In marouanemeft's example above, it will return the first 2 characters in the string variable d.  However, if you look at the parameters passed (0 and 1), there is only a difference of 1.  Again, at a glance I find this confusing because I would expect it to only return 1 character (because of the difference between the two parameters).

Thankfully ECMA has provided us with an alternative.  The substr method accepts 2 parameters as well - the position of the first character in the string, and the length of the substring you wish to pull.  So, to modify marouanemeft's example to use the substr method:


d.substr(0, 2)

At a glance this is more intuitive.  You know immediately how long the substring will be that is returned.


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