正则表达式测试字符串结尾吗？

Question

I'm horrible at RegEx and I need a regex to test if a certain string ends a certain way. For example, if the RegEx tests for ending with foo, "somestringfoo" -> True and "someotherFoostring" -> False. It needs to be case sensitive and work with alphanumeric and underscore. Here is what I've got, but I can't get it to work:

var test = RegExp.test('/foo$/');

Answer 1

您可以这样进行：

/foo$/.test("somestringfoo")

Answer 2

this should do the work:

function isFoo(string){
  var pattern = /foo$/;  
  return pattern.test(string);
}

Answer 3

test is a method of the regexp object, so it would be /foo$/.test(someString) or new Regexp("foo$").test(someString) .

However, testing a string for ending with a certain substring does not need regular expressions, see endsWith in JavaScript .