javascript - js 正则表达式 取/travel/1700 travel 后面数字

Question

取/travel/1700 travel 后面数字

Answer 1

var str = '/travel/1700';
var reg = /\/travel\/(\d+)/;
var ret;

ret = str.match(reg)[1];

或

ret = str.replace(reg,function(){
    return arguments[1];
});

Answer 2

var str = '/travel/1800';
var pattern = /\/travel\/(\d+)/;

alert(pattern.exec(str)[1]);