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Does JavaScript have a goto statement like C Language? If yes, then how can I use it? Can we work around the same code without using the goto statement?
JavaScript has a goto statement, which is a reserved keyword. It isn’t popular since it is not needed in JavaScript. Generally, it isn’t considered a good practice to use a goto statement. Using goto with JavaScript preprocessing is still considered good as shown below: , The above code gets translated like the following: ,
Where the JavaScript variables get stored like in C/C++ local variables gets stored in Stack, Dynamic memory allocation in Heap area. I consider the storage location of JavaScript variables to be RAM, browser or hard disk.
Like many other programming languages, JavaScript has variables. Variables 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. JavaScript variables get stored in the memory of the browser process. The following ways can work for storing variables: The variables which you declare in your JavaScript code ge.....
It gets fired prior to loading of images and other external content. document.onload event is fired before the window.onload. It gets fired when the complete page loads, which includes images, scripts, css, etc. Here’a an example to understand onload. Live Demo ,
I have a website, wherein I publish content, images, and videos. How can I add Scalable Vector graphics (SVG) to one of my web page? Which tag is used to add SVG to a website and what values get added?
SVG stands for Scalable Vector Graphics and is a language for describing 2D-graphics and graphical applications in XML and the XML is then rendered by an SVG viewer. Most of the web browsers can display SVG just like they can display PNG, GIF, and JPG. Note: If you already have an SVG file, then add it using <img> <object>, or <embed> tags. To add SVG to web page, use <.....
I have worked on the formnovalidate attribute, but haven’t used the novalidate attribute till now. What is the difference between novalidate and formnovalidate attributes in HTML forms?
The novalidate and formnovalidate attributes are used to bypass validation. The novalidate attribute is applied to a form and prevents it from validation. The formnovalidate is applied to input type submit button, which overrides the novalidate. It submits the form without validating. The novalidate attribute is also a Boolean attribute, but using it won’t validate the form of su.....
I need to work on the step attribute of form input type to create a range of numbers. For my website, I want to show a range of steps. How can I use input type field with steps in HTML?
The HTML input type step attribute sets the legal number intervals. Steps are number steps like 0, 5, 10, 15, 20, etc. The step attribute can be used together with the max and min attributes to create a range of legal values. You can try to run the following code to create a step of numbers with the input step attribute. Here, we are creating a step 5, so the valid input will be 5, 10, 15, .....
I have created an HTML form to get user input from college students such as roll number, name, age, etc. I want to use a textarea to get user input for “What improvements they want in College”. How can I used textarea, to allow students to add multi-line text?
To create a multi-line text input, use the HTML <textarea> tag. You can set the size of a text area using the cols and rows attributes. It is used within a form, to allow users to input text over multiple rows. Here are the attributes of <textarea> tag: AttributeValueDescriptionautofocusautofocusSpecifies that on page load the text area should automatically get focus.ColsnumberS.....
With JavaScript, I want to find whether a variable is ‘undefined’. The following is my code, but I am not sure about it and it checks both undefined and null: ,
On getting the result of the following, you can find whether a variable is ‘undefined’. If the result is “false”, it means the variable is undefined.
Here, the variable results in “True”
Live Demo
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I have an HTML web page with content. I need to mark the text, which I have added to the document recently. This will help users in distinguishing the newly added content. How to mark inserted text in HTML?
To mark inserted text in HTML, use the <ins>…</ins> tag. This is crucial in finding the differences between multiple versions of the same document. Also, use it to signify a range of text added to a document. You can try to run the following code to mark inserted text in HTML Live Demo ,
I have an HTML web page. I don’t want to go with the default font family for text in HTML. How should I set text font family, which changes the default font?
To change the text font family in HTML, use the style attribute. The style attribute specifies an inline style for an element. The attribute is used with the HTML <p> tag, with the CSS property font-family. HTML5 do not support the <font> tag, so the CSS style is used to add font size. Just keep in mind, the usage of style attribute overrides any style set globally. It will over.....
