Question

extjs 截取字符串

var a = "123456789"
怎么获得 b = "12"
c = "34"
等等！
坐等大神解答

Answer 1

a.substring(start,end);
试一下
b = a.substring(0,2);
c = a.substring(2,4);

Answer 2

不就是和js中截取一样的啊