I have a javascript string variable like so:
var somestring = "mypattern_var1_var2";
How can I use regex to extract var1 & var2?
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4 Answers
I would just use the split() method instead if it's that straightforward:
var somestring = "mypattern_var1_var2";
var tokens = somestring.split("_");
var var1 = tokens[1];
var var2 = tokens[2];
Comments
I know you specified regex, but is there a specific reason to use it?
An alternative would be to use the .split() method, which would probably be easier.
var somestring = "mypattern_var1_var2";
var results = somestring.split("_");
var var1 = results[1];
var var2 = results[2];
Comments
No need
var parts = somestring.split("_");
alert(parts[1] + ':' + parts[2])
Or get real fancy like How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
And we MUST have jQuery in the equation: Regular expression field validation in jQuery
3 Comments
McStretch
Haha barely! You deserve an upvote too. It gets crazy when each answer is within seconds of each other.
mplungjan
@McStr - so now we should add a fiddle to demo this complex script. I wonder if we can't make it more interesting with a jQuery plugin and
each ;)McStretch
Hahaha it's not a true javascript question if jQuery isn't mentioned. I do love me some jQuery though!
You could use a split() in this situation - given that you always know that you will have a pattern in the beginning, (given that the pattern doesn't contain any '_'s)
var somestring = "mypattern_var1_var2";
var example = somestring.split('_');
var1 = example[1];
var2 = example[2];
