Javascript Articles - Page 599 of 671

If you have set a time using setTimeout() function, then you can clear it using the JavaScript clearTimeout() function.ExampleYou can try to run the following code learn how to implement clearTimeout() function in JavaScript −           JavaScript Animation                                                        Click the buttons below to handle animation                              

You can use several Navigator related properties in your web page. The following are the properties −Sr.NoProperties & Description1javaEnabled()This method determines if JavaScript is enabled in the client. If JavaScript is enabled, this method returns true; otherwise, it returns false.2plugings.refreshThis method makes newly installed plug-ins available and populates the plugins array with all new plug-in names. Netscape only.3preference(name, value)This method allows a signed script to get and set some Netscape preferences. If the second parameter is omitted, this method will return the value of the specified preference; otherwise, it sets the value. Netscape only.4taintEnabled()This method returns true if data tainting ... Read More

The code while using anonymous functions is more readable when handlers are to be defined inside the calling code. Anonymous functions are declared inline. Normally, inline functions are better since they can access variables in the parent scopes.It allows for creating a function without any names identifier. It can be used as an argument to other functions. You can call them using a variable name.This is how JavaScript anonymous functions can be used −var func = function() {    alert(‘This is anonymous'); } func();Here’s an example −//anonymous function var a = function() {    return 5; }

To debug JavaScript on the iPad, you need to open the Safari browser.Now enable Web Inspector in iOS. In the Settings app, select Safari. Tap the Advanced option and start Web Inspector −Now select Web Inspector −Use a USB cable to connect the iPad to Mac. Safari opens and your iPad now visible in the DEVELOP Menu. After selecting, start debugging JavaScript.

To debug CSS/JavaSript hover issues, you need to follow the below-given steps, Press F12 to open Inspect Element, in Firefox. In the DOM view right-click the element, and Select :hover, :active or :focus at the bottom of the context menuThe following screenshot shows how to debug hover issues −

To debug obfuscated JavaScript code, you need to use a JavaScript formatter or beautifier. Go to the following link to beautify JavaScript, In the left section, add your obfuscated JavaScript code and click Beautify as shown below, On clicking, you can see Beautified JavaScript code in the right section.

To debug JavaScript in Visual Studio, follow the below-given steps −Open Visual StudioSelect your project to be debugged in Solution Explorer.Right Click and select Browse With, and set a default browser.Now, go to START and type Internet Options.Above, uncheck both the options for Disable script debugging.Click Apply, and then Ok.Now set breakpoints in your JS file.After that press the debug button in Visual Studio.

To force Google Chrome’s script debugger to reload JavaScript, follow the below steps −Open Dev ToolsClick on the Sources tabFind your script / image / fileCheck the right panel to see if your file is up to dateIf the file is not up to date, then −Right-click the resource in the left panel and choose 'Open Link in New Tab'Force a reload of the resource with CTRL+F5

We use the onclick event attribute property of the HTML button to call a JavaScript function. The JavaScript code provided in the onclick attribute executes when the button is clicked. There are various attributes provided with the button tag in HTML that allows us to customize the button’s functionality and also let us decide how and what the button triggers. Approach 1: Using the onclick event in JavaScript The onclick event of the button element expects JavaScript code that is triggered when the button is clicked upon. So we put the function that needs to be called in the onclick ... Read More

Comments are used to explain the code flow and want to prevent the code from executing. In JavaScript, there are two types of comments. One is single-line comments, used to comment on the single-line code to prevent the code from executing or to explain the code. Another one is multi-line comments, used to comment on blocks of code to prevent the code from the execution or to explain code that is added in or code. By adding comments, we will give clarity to other developers also why code is added and what that particular code will do. Commented code will ... Read More