To get current date and time in JavaScript, use the Date object.ExampleYou can try to run the following code to display date and time −                          document.getElementById("currentDate").innerHTML = Date();          

To print a page in JavaScript, use the window.print() method. It opens up the standard dialog box, through which you can easily set the printing options like which printer to select for printing.ExampleYou can try to run the following code to learn how to print a page −Live Demo           Click to Print                function display() {             window.print();          }          

The standard JavaScript alert box won’t work if you want to customize it. For that, we have a custom alert box, which we’re creating using jQuery and styled with CSS.ExampleYou can try to run the following code to create an alert box with 3 buttons i.e Yes, No and Cancel.                          function functionConfirm(msg, myYes, myNo, cancel) {             var confirmBox = $("#confirm");             confirmBox.find(".message").text(msg);             confirmBox.find(".yes, .no, .cancel").unbind().click(function() {     ... Read More

In this tutorial, we will learn to check if a variable is an integer in JavaScript. Before we solve the problem, we must have a problem. We can ask ourselves, “why do we need to check if the variable is an integer?”. Let’s understand the answer using a single example. Suppose, we are taking the value from the user using the input text box. It returns the values in the string format, and now think that we are adding values. Will we get the correct result? Obviously, not. So, in such cases, we need to check if the variable is ... Read More

 The standard alert box in JavaScript does not provide the option to apply CSS. To style your alert box, you need to create a custom one first. The custom alert box will be created using jQuery and styles will be applied to CSS.ExampleYou can try to run the following code to learn how to create and apply CSS to alert box −Live Demo                          function functionAlert(msg, myYes) {             var confirmBox = $("#confirm");             confirmBox.find(".message").text(msg);   ... Read More

In this tutorial, we will learn to stop a video with JavaScript on YouTube. Using the ‘iframe’ HTML element, we can easily embed the YouTube videos on our application. It is a video player in HTML 5 and has many attributes that users can use according to their needs. In some cases, it happens that you want to create a custom pause or stop button for the embedded YouTube video. Customized buttons are always pretty rather than default ones, making UI pretty. So, we will learn two different methods to create the custom stop button for the YouTube videos. However, ... Read More

The void operator is used to evaluate the given expression. After that, it returns undefined. It obtains the undefined primitive value, using void(0) i.e. 0 as an argument.The void(0) can be used with hyperlinks to obtain the undefined primitive value, ExampleLive Demo           Understanding JavaScript void(0)               Click me not once, but twice.     We used JavaScript:void(0) above to prevent the page from reloading when the button is clicked the first time.The code will only work when the button will be clicked twice. If it is clicked once, ... Read More

The JavaScript void returns an expression to remove the side effect and return the undefined primitive value. This side effect may occur while inserting expression in a web page.Let’s see an example of the void. The void(0) can be used with hyperlinks to obtain the undefined primitive value, ExampleLive Demo                    Understanding JavaScript void(0)                 Click me not once, but twice.     We used JavaScript:void(0) above to prevent the page from reloading when the button is clicked the first time.The code will ... Read More

To use an image on a webpage, use the tag. The tag allows you to add image source, alt, width, height, etc. The alt is the alternate text attribute, which is text that is visible when the image fails to load.The following are the attributes −AttributeDescriptionAltThe alternate text for the imageHeightThe height of the imageIsmapThe image as a server-side image-mapLongdescThe URL to a detailed description of an imageSrcThe URL of an imageUsemapThe image as a client-side image-mapWidthThe width of the imageJust keep in mind the tag has no end tag.ExampleYou can try to run the following code to ... Read More

To display JavaScript variable value in an alert box, try to run the following code −ExampleLive Demo                    function display() {             var a = "Simple";             var b = "Learning";             alert(a +" Easy "+ b);          }