The onsubmit event occurs when you try to submit a form. You can put your form validation against this event type. The following example shows how to use onsubmit. Here, we are calling a validate() function before submitting a form data to the webserver. If validate() function returns true, the ... Read More

Java supports inheritance, an OOPs concept where one class acquires the members (methods and fields) of another.You can inherit the members of one class from another, use the extends keyword as:class A extends B{}The class which inherits the properties of other is known as child class (derived class, sub class) ... Read More

Java provides two types of branching/control statements namely, break and continue.The break statementThis statement terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch.ExampleFollowing is the example of the break statement. Here we are trying to print elements up to 10 and, ... Read More

You can tell your browser not to cache your page by using the following meta tags − In addition, try the following:  Append a parameter/string to the filename in the script tag. Change it when the file changes.Then the next time you update the file, just update the version i.e.Read More

The onmouseover attribute triggers when a mouse pointer moves over an element in HTML.ExampleYou can try to run the following code to implement onmouseover attribute −                    This is demo heading.             Keep the mouse cursor on the heading to change the color.                function display() {             document.getElementById("myid").style.color = "red";          }          

When there is a circle drawn on canvas and we put red color on half and grey color on a portion of a circle, then on clicking a red color, we call function1.On clicking grey part, function 2 is called and we need to use reusable path objects to store ... Read More

It is possible to change the textcolour depending on the average brightness of the covered pixels ofits parent's background color by using the following code snippet.var rgb = [255, 0, 0]; setInterval(display, 1000); function display() {    rgb[0] = Math.round(Math.random() * 255);    rgb[1] = Math.round(Math.random() * 255);    rgb[2] ... Read More

As you may have seen, whenever you open a dropdown, and click anywhere else, the dropdown close. By using the below given code, the dropdown menu can be kept open after click−$('#myDropdown').on('hide.bs.dropdown', function () {    return false; });Another option is to handle the clickevent −The click event can also be ... Read More

When an element is scrolled, the onscroll attribute triggers. You can try to run the following code to implement onscroll attribute −Example                    #myid {             width   : 250px;             height ... Read More

Use the tag in HTML to specify citation. Cite can be defined as the title of a work. You can try to run the following code to implement tag for adding citation −Example           HTML cite Tag               The learning content can be referred from Data Structures        & Algorithms in Java