ECMAScript 6 introduced String.prototype.includes : const string = "foo"; const substring = "oo"; ... Here's a JavaScript implementation by Project Nayuki, ... ... <看更多>

The includes() method returns true if the searchString found in the string ; otherwise false . The optional position parameter specifies the position within the ... ... <看更多>

In this tutorial, you'll learn how to use the JavaScript String Contains function to determine whether a string ... ... <看更多>

... for String.includes? Reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes. ... <看更多>