The example instantiates a StringSearcher object by passing the string to search for to its class constructor. The thezozamtimes.orgWith method has same. Because includes will compare '#' with each array element. Let's try with some or find if you want to find if you want to get exactly element. Besides strings, includes also works great with other primitive types. const symbol = Symbol('symbol'); const array = [ 'string', , 0, undefined, null, symbol ];.

Javascript array contains string startswith -

Thanks Hos Mercury. This method is an O n operation, where n is the Length of array. There are also multiple native regex methods to test for the presence of a string pattern. Increase k by 1. I would then need to return the successfully matched array element with the full string. David Chambers. This means you need to have a polyfil available if your code uses this method. Linked Increase k by 1. If you have mixed types in your array, thats just bad practice, but I've added the check anyway. The Overflow Blog.