javascript - js string interception

Question

'/xxx/xxx/xxx/xxx/xxx/...', /xxx is greater than or equal to 2, how to get the first two '/xxx/xxx' in the simplest way (without defining extra variables) ?

Answer 1

a = a.split("/")
a[1]
a[2]

Answer 2

'/' + '/product/list/xxx/xxx'.slice(1).split('/', 2).join('/')

Answer 3

("/xxx/xxx/xxx/xxx/xxx/...".match(/^\/.*?\/[^\/]*/) || [])[0]

Answer 4

使用正则/(\/.*?\/.*?)\//

var str = '/xxx/xxx/xxx/xxx/xxx/...';
var reg = /(\/.*?\/.*?)\//;
console.log(str.match(reg)[1])