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Javascript Articles
Page 532 of 534
What is the fastest, pure JavaScript, Graph visualization toolkit?
The fastest and pure JavaScripr Graph visualization toolkit isJavaScript InfoVis Toolkit. With it, you can, Perform Graph manipulation, Create bar graphs, Custom nodes, Implementing NodeTypes Adding subtrees, Drag and drop nodes, etc.
Read MoreHow to Line Breaks to JavaScript Alert?
To add line breaks to JavaScript alert, use “\r”. In the following example, we will see how to display text in JavaScript alert.Example Live Demo function DisplayAlert() { var newLine = "\r" var msg = "Showing how to add line break." msg += newLine; msg += "Line Break can be easily added in JavaScript."; msg += newLine; msg += "Simply Easy Learning"; msg+= newLine; msg += "TutorialsPoint.com"; alert(msg); }
Read MoreWhen should I use an Inline script and when to use external JavaScript file?
To enhance performance, try to keep JavaScript external. The separate code makes it easier for web browsers to cache. However, use inline scripts only when you’re making single page websites. Still, it's better to use external code i.e. external JavaScript. To place JavaScript in external file create an external JavaScript file with the extension .js. After creating, add it to the HTML file in the script tag. The src attribute is used to include that external JavaScript file. If you have more than one external JavaScript file, then add it to the same web page to increase the performance of ...
Read MoreHow are variables allocated memory in JavaScript?
JavaScript handling of the variable is different from other programming languages C, C++., Java, etc. Variables in JavaScript can be thought of as named containers. You can place data into these containers and then refer to the data simply by naming the container. Before you use a variable in a JavaScript program, you must declare it. Variables are declared with the var keyword as follows. var rank; var points; Storing a value in a variable is called variable initialization. You can do variable initialization at the time of variable creation or at a ...
Read MoreHow can I use goto statement in JavaScript?
JavaScript goto statement is a reserved keyword. Generally, according to web standards it isn’t considered a good practice to use goto statement.Using goto with JavaScript preprocessing is still considered good as shown below.var a = 0; [lbl] beginning: console.log("Demo Text!"); a++; if(i < 424) goto beginning;The above code gets translated like the following −var a = 0; beginning: while(true) { console.log("Demo Text!"); a++; if(i < 424) continue beginning; break; }
Read MoreHow to call a JavaScript function on submit form?
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 form will be submitted, otherwise it will not submit the data. The HTML code snippet. …
Read MoreHow to create a dialog with “yes” and “no” options in JavaScript?
No, you cannot create a dialog box with “yes” or “no”. A confirmation dialog box in JavaScript has “Ok” and “Cancel” button.To create a dialog with “yes” or “nor”, use a custom dialog box.ExampleLive Demo function functionConfirm(msg, myYes, myNo) { var confirmBox = $("#confirm"); confirmBox.find(".message").text(msg); confirmBox.find(".yes, .no").unbind().click(function() { confirmBox.hide(); }); ...
Read MoreWhat is the difference between local storage vs cookies?
On client and server, the following storages are available: local storage, session storage, and cookies.The Local Storage is designed for storage that spans multiple windows and lasts beyond the current session. In particular, Web applications may wish to store megabytes of user data, such as entire user-authored documents or a user's mailbox, on the client side for performance reasons. Cookies do not handle this case well because they are transmitted with every request.Local Storage is available for every page and remains even when the web browser is closed, but you cannot read it on the server.The stored data has no ...
Read MoreWhat are secured cookies in JavaScript?
A secured cookie is a cookie that works with HTTP/HTTPS, known as a httpOnly cookie. These cookies are only used for HTTP requests, so unethical access though scripting is not possible. Therefore, cross-site scripting can be stopped, which in turn stops attacks.The secure attribute is always activated for secured cookies, so it is transmitted with encrypted connections, without any hassles and security issues. The httpOnly flag does not give cookie access to JavaScript or any non-HTTP methods. This is situated in the secure cookie header.The secure attribute and httpOnly flag ensure that the browser does not allow malicious scripts to ...
Read MoreHow to get Natural logarithm of 10 in JavaScript?
To get the Natural logarithm of 10, use the Math.LN10 property in JavaScript. It returns the natural logarithm of 10, which is approximately 2.302.You can try to run the following code to get Natural logarithm of 10:Example Live Demo JavaScript Math LN10 Property var property_value = Math.LN10; document.write("Property Value: " + property_value);
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