JavaScript Tutorial

Oncopy Event Javascript Sometimes, we are required to react if some user copies some particular element. For example, let’s say that there is some examination going on, and the candidate tries to copy the question so that he/she can search it online. How about if the candidate copies the question, and the question gets changed? […]

Onpaste event Javascript Sometimes, it may happen that we need to react if someone pastes something into the element on the webpage. In such situations, we can trigger the paste event. Here, we are going to use the HTML attribute for the event paste, which is Onpaste, and we would write a function, which would

Events in Javascript At times, there are some things, that are going on with the HTML elements, like hovering over some element, clicking on some element, or double click on some element, and a lot more. We can do different things on the basis of these actions. These are often called events. So, the event

JavaScript String charAt Method Sometimes, we need to get some character at the given index, from the string. In such situations, we can make use of the charAt method. This method is simple to use and understand. This method takes the given index as an argument and then returns the character at the given index

Javascript String Trim Method At times, we may get some string, with some spaces at the start, and the end, and we need to remove that. For example, there could be some name, and then there are a lot of spaces on both the ends of the string(as shown in the below example). So, in

String toLowercase Javascript In some situations, we need to convert our string, into lower case, and in such situations, there is a method, called as toLowerCase, for our help. As the name of the method says, the toLowerCase method is going to convert the string into lower case. Remember that this method is going to

Javascript String Uppercase() Method Sometimes, we need to convert our string, into uppercase, and in such situations, we can make use of the toUpperCase() method. This method is going to return a new string, converted to upper case. Remember that still, the original string is going to be as it was. Let’s have a look

String Replace Javascript As the name of this method says, this method is going to help us replace some pattern inside the string, with another replacement. The pattern can be some string or some regular expression. If we have the string as a pattern for replacing, then, only the first occurrence of that string would

Javascript String Substring Method As the name of the method says it all, this method is going to give us the substring from the given string. Basically, we can understand the substring as just some string inside another string. So, let’s study this method, and we would also have a look at some program, which