将字符串的一部分放入变量

Question

i need to get part of string into variable. (note, i will always use exactly 4 names)

var names = "Andrew Peter Bob Mark"

I need to get the last one to

var last = "Mark"

Thanks for help in advance

Answer 1

var last = names.split(/\s+/).pop(); // "Mark"

Explanation: .split splits a string on a given separator and returns an array. /\\s+/ is a regular expression for "one or more whitespaces" (space, tab, newline, etc). .pop() grabs the last value from the array that .split returns.

Answer 2

Answer from Roatin Marth is correct, but in case if you need 4 times faster version (in IE) of same operation:

var last = names.substr(names.lastIndexOf(" "));

It is working without regular expressions and temp arrays - just with index operations of string.