JavaScript: String.prototype.substr

By Xah Lee. Date: . Last updated: .
str.substr(index, length)
Return a substring of length length, starting at index 
console.log( "abcd".substr(1,2) === "bc" ); // true

console.log( "abcd".substr(1, 9) === "bcd" ); // true
// length longer than available, take to the end instead

JS substring

BUY
ΣJS
JavaScript in Depth

JS Obj Reference

String

prototype