In this problem, we will check whether we can convert string alpha2 to alpha1 by performing the XOR operation of any two adjacent characters and replacing both characters with an XOR value. We will use the logic based on the XOR value of two digits to solve the problem. If ... Read More

In this problem, we will check whether we can convert the string alpha1 to alpha2 by inserting the same characters between any two same characters of the given string. We will use the run length encoding algorithm to solve the problem, which counts the frequency of the contiguous characters. Problem ... Read More

In this problem, we will check whether all characters are present continuously in the given string. We will use the map data structure to solve the problem. The map will keep track of the last index of the particular character, and based on the last index of the current character, ... Read More

In CSS, we can use the ‘border-bottom’ CSS property to set the bottom border for an HTML element. We can use the animation property to animate the width of the bottom border. Also, we require to define the keyframes by changing the width of the bottom border to animate it. ... Read More

While creating the web page, developers may require to reset the selected option for the dropdown menu. For example, we added the dropdown menu in the form allowing users to select any option. Once users submit the form, we require to reset the dropdown menu options using JavaScript or Jquery. ... Read More

In this tutorial, we will learn to replace an HTML element with another one using JavaScript. In some use cases, we require to replace a whole HTML element with a different one. For example, it is very important in the form validation. Suppose we are taking the user’s age from ... Read More

Whenever we use tag in the HTML, it shows the anchor text with the underline on the web page. Sometimes, underlining looks very annoying, and we require to remove the underline from JavaScript. The ‘textDecoration’ property of the style object allows developers to remove the line from the anchor ... Read More

Programmers require to use CSS while developing the web page to style the web page and make it attractive. We can add CSS to the web page in three ways: inline CSS, Internal CSS, and external CSS. To apply external CSS, we can import the CSS file in the ... Read More

In HTML, the table is used to show the data on the web page in a formatted way. The table contains the columns and rows to show the data. Sometimes, developers need to delete the table column or allow users to delete them. For example, the table contains the ... Read More

In HTML, developers can use the ‘ul’ tag to create a list of items. We can add all related items to the single list. We can also manage the list items using JavaScript. Sometimes, developers require to add or remove list items using JavaScript. We can access the list items ... Read More