In this tutorial, you will learn how to check if a textbox contains only numbers in javascript. In HTML, a textbox is created using either input element or textarea element. Input element is suitable for a single line text content and textarea element is suitable for multiline text content. From a developer perspective, it can
In this tutorial, you will learn how to check if a string has unique characters in javascript. A string is formed with a combination of multiple characters and as a result, a string can have duplicate or unique characters. For a newbie developer, it can be a bit tricky to find if a string has
In this tutorial, you will learn how to check if string has trailing whitespace in javascript. It is pretty common to get an extra unwanted trailing whitespace in a sentence. For a newbie developer, it can be a bit tricky to find if a string has a trailing whitespace. There are numerous ways to check
In this tutorial, you will learn how to check if an array has a string in javascript. In an array, we can have duplicate strings, and to keep our array filled with unique strings, we need to verify if a string is already present in it or not. For a newbie developer, it can be
In this tutorial, you will learn how to check if variable has string value in javascript. There are certain primitive types in javascript and string is one of them. As the name suggests, any variable that holds a plain text as its value is considered to be of string type. For a newbie developer, it
