用JavaScript分割字符串

Question

下面的代碼適用於我，但似乎相當冗長。我可以縮短它嗎？

var str = "some title of an event here, weekday 17:00 – 18:00 o’clock, with name of a person"; 
var date = str.split(', '); 
var time = date[1].split(' '); 
var timeItems = time[1].split('–'); 
var startTime = timeItems[0].trim(); 
var endtime = timeItems[1].trim(); 
alert("event lasts from "startTime + " to " + endtime); 

感謝

Answer 1

是你想要的所有startTime和endTime？如果是這樣，你可能只是做split()上冒號：

times = str.split(':'); 
startTime = times[0].slice(-2) + ':' + times[1].slice(0,2); 
endTime = times[1].slice(-2) + ':' + times[2].slice(0,2); 
alert("event lasts from " + startTime + " to " + endTime); 

Answer 2

雖然正則表達式往往是矯枉過正，他們會幫助你在你這裏尋求短代碼：

var str = "some title of an event here, weekday 17:00 – 18:00 o’clock, with name of a person"; 
var times = str.match(/\d\d?:\d\d/g); 
alert("event lasts from " + times[0] + " to " + times[1]); 

運行它在http://jsfiddle.net/jvs3s/