Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Javascript Articles
Page 447 of 534
How to reduce the number of errors in scripts?
To reduce the number of errors in scripts, follow the below-given tips −Use plenty of comments. Comments enable you to explain why you wrote the script the way you did and to explain particularly difficult sections of code.Always use indentation to make your code easy to read. Indenting statements also make it easier for you to match up the beginning and ending tags, curly braces, and other HTML and script elements.Write modular code. Whenever possible, group your statements into functions. Functions let you group related statements, and test and reuse portions of code with minimal effort.Be consistent in the way you ...
Read MoreWith JavaScript how can I find the name of the web browser, with version?
To find the name of the web browser, with version, you need to try the following code −Example Browser Detection Example
Read MoreHow to debug CSS/JavaScript hover issues?
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 −
Read MoreHow to Debug JavaScript on iPad?
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.
Read MoreWhat are different Navigator methods available?
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 MoreWhat is the role of clearTimeout() function in JavaScript?
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
Read MoreHow to list down all the plug-in installed in your browser?
To list down all the plug-on installed in the web browser, use the JavaScript navigator object. The JavaScript navigator object includes a child object called plugins. This object is an array, with one entry for each plug-in installed on the browser.ExampleYou can try to run the following code to list down all the plug-in installed in your browser − List of Plug-Ins Plug-in Name Filename Description for (i = 0; i < navigator.plugins.length; i++) { document.write(""); document.write(navigator.plugins[i].name); document.write(""); document.write(navigator.plugins[i].filename); document.write(""); document.write(navigator.plugins[i].description); document.write(""); }
Read MoreHow to debug JavaScript in Visual Studio?
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.
Read MoreWhat are common HTML Events supported by JavaScript?
The following are some of the common HTML events supported by JavaScript −AttributeValueDescriptiononclickscriptTriggers on a mouse clickoncontextmenuscriptTriggers when a context menu is triggeredondblclickscriptTriggers on a mouse double-clickondragscriptTriggers when an element is draggedondragendscriptTriggers at the end of a drag operationondragenterscriptTriggers when an element has been dragged to a valid drop targetondragleavescriptTriggers when an element is being dragged over a valid drop targetondragoverscriptTriggers at the start of a drag operationondragstartscriptTriggers at the start of a drag operationondropscriptTriggers when dragged element is being droppedondurationchangescriptTriggers when the length of the media is changed
Read MoreWhat are JavaScript Identifiers?
JavaScript Identifiers are names given to variables, functions, etc. It is the same as identifiers in other programming languages like C, C++, Java, etc. Let’s see identifiers for variable names.The following are legal variable names −val val1 resultWhile naming your variables in JavaScript, keep the following rules in mind.You should not use any of the JavaScript reserved keywords as a variable name. These keywords are mentioned in the next section. For example, break or boolean variable names are not valid.JavaScript variable names should not start with a numeral (0-9). They must begin with a letter or an underscore character. For ...
Read More