function confirmEnding(str, target) {
if (str.substr(str.length - target.length, target.length) === target) return true;
else return false;
}
confirmEnding("Open sesame", "same");
如confirmEnding("Open sesame", "same") 应该返回true.
原文：http://www.cnblogs.com/RRirring/p/5715133.html