Found 6704 Articles for Javascript

To call a JavaScript function from C++, generate a js file, which calls the function. The web page will load the JS and the function runs −int callId = 0; void callFunction() {    // the js file    ofstream fout("generate.js");    fout

Adding semicolons after every function is optional. To avoid undesirable results, while using functions expressions, use a semicolon.Using semicolonvar display = function () {   alert(“Hello World”); }; (function () {   // code })();Without using semicolonvar display = function () {   alert(“Hello World”); } (function () {   // code })();The first function executes immediately since we have used the semicolon.

The trigger() method triggers the specified event and the default behaviour of an event (like form submission) for the selected elements.For example: $( "#foo" ).on( "click", function() {   alert( $( this ).text() ); }); $( "#foo" ).trigger( "click" );

The following global error handler will show how to catch unhandled exception −Example                    window.onerror = function(errMsg, url, line, column, error) {             var result = !column ? '' : 'column: ' + column;             result += !error;             document.write("Error= " + errMsg + "url= " + url + "line= " + line + result);             var suppressErrorAlert = true;             return suppressErrorAlert;          };          setTimeout(function() {             eval("{");          }, 500)          

In this tutorial, we will learn to center a popup window on the screen using JavaScript. Programmers often need to open a new popup window to show another webpage without redirecting the user to the other webpage. In this situation, developers use the window.open() method to open the new browser window. Also, we can style the popup window and set the height and width. Also, we can change the position of the popup window to look it better. Sample Popup Window In this section, we will create a sample popup window to get familiar with the how window.open() method works. ... Read More

To call a JavaScript function from the console, run the following code:Example                    var display = {             displayOne: function(){ return "displayTwo" ;}          };          console.log(display.displayOne());          

JavaScript is the core of any website, it adds functionalities to a website, make the overall website responsive. But in JavaScript, it is hard to select an element and add different functions like toggling an element, fade-in an element, and more. jQuery provides many methods for making it easy to add functionality to a website like fade-in, fade-out, hide, show, toggle, etc. Concatenating jQuery and JavaScript makes it easy to use the jQuery function in JavaScript function whenever needed, instead of calling them separately. Syntax To call a jQuery function with a JavaScript function, you can use the following syntax ... Read More

JavaScript cannot call java method directly since it is on the server. You need a Java framework like JSP to call when a request is received from JavaScript. Let’s see how to use JSP to call a Java function inside JavaScript function.Here’s the JavaScript code://javascript code function initiateFunc() {    $.get('localhost/project/myexecution.jsp); } $( initiateFunc); Here’s the JSP code for “myexecution.jsp”:

We use the dialog API of jQuery UI to show hyperlinks in JavaScript alerts. JavaScript does not allow putting clickable hyperlinks in the alert box. The closest functionality that plain JavaScript provides is a confirm box using the window.confirm() method. We will be using the jQuery library to show hyperlinks in JavaScript alerts. It is a library for JavaScript to traverse HTML documents as well as manipulate them, create animations, and much more. One such feature is a custom dialog box that we will be using. An alert is a message for the user that requires immediate attention. An alert ... Read More

In this tutorial, we will learn how to validate an email address using JavaScript. A computer network's electronic mailbox, often known as an email address, is used to send and receive messages. All email addresses have the same format as in the 1980s. The email validation process checks to see if an email address is deliverable and legitimate. It quickly executes an algorithm that detects different typos and also whether there are deliberate misdirection or innocent errors. It verifies like Gmail or Yahoo if a certain email address is registered with such reputable domain or not. This increases the effectiveness ... Read More