Question

I know about .split( “-” ,2), but how can i make something like this

var str = "123-341235";
alert( str.split( "-",2 ) . [2] )<--- to get second one (341235) value? 

Tnx for help All!

Answer 1

I see two simple solutions, which have roughly the same performance:

var str = "123-341235";
str.split('-')[1]; // => "341235" (slower)
str.slice(str.indexOf('-')+1); // => "341235" (faster)

This jsPerf benchmark shows the “slice/indexOf” solution to be about twice as fast on Chrome and Firefox.

Note that for either solution you’ll have to check that the hypen character really exists before retrieving the second part of the string; I would bet that adding the check still leaves the “slice/indexOf” solution to be much faster.