substr vs substring

Language	Function	Exempli Gratia	Result
Javascript	substr(start,length)	'01234'.substr(1,3)	"123"
	substring(start,end)	'01234'.substring(1,3);	"12"
JAVA	substring(start,end)	'01234'.substring(1,3);	"12"
Index starts with 0(zero)
"end" argument means " Index -1 "