Learn how to use the browser.wait() function in Protractor and JavaScript to wait for a condition to be met before continuing with your test.
Use the `onload` event to detect when a dynamically loaded script has finished loading, then execute your code.
Use the `.then()` method to wait for a Promise to resolve before continuing the function.
Use the “ref” attribute to access the external JavaScript function from React components and call it using the “ref” attribute.
Use the `subscribe()` method to call the observable and receive the emitted values in RxJS and JavaScript.
Learn how to use the JavaScript indexOf() method to find the index of the first number in a string.
Learn how to use the JavaScript Array.prototype.indexOf() method to find the index of duplicate elements in an array.
Learn how to use the indexOf() method to find the index of an object in an array in JavaScript.
Learn how to use the indexOf() method to find the index of an element in an array in JavaScript.
Learn how to use the indexOf() and lastIndexOf() methods to find the index of all occurrences of a value in JavaScript.
