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Front End Technology Articles
Page 266 of 652
How to use drag and drop in HTML5?
Grabbing an object and moving it to a different position is made simpler with the drag and drop idea, which is very dynamic and user-friendly. This enables the user to click and drag an element to another position before letting go of the mouse button to drop it there. Drag and drop events Drag and Drop event consists of various types of events, some of them are listed below. ondrag − is a term used in HTML to describe when an element or text selection is being moved around. ondragstart − is a function that is called when a ...
Read MoreHTML5 Canvas fit to window
When you view a webpage containing canvas in different screens like that of mobile, pc, desktop or tablet, the size of the screen changes each time. So, it is necessary that the canvas resizes itself according to the screen for better user experience. In this article, we will learn how to resize an HTML5 canvas to fit the window. Let us first understand more about HTML5. HTML5 HTML (Hyper Text Markup Language) is a standard markup language for web pages. Using HTML, you can create your own website. HTML5 is the updated version of HTML with advanced technology used in ...
Read MoreHow to handle errors in HTML5 Web Workers?
Suppose you want the browser to do complex calculations on web page on clicking a word. This will take time. So, the web page will become unresponsive until the operation is completed. You need something which will do the required operation silently without affecting the user interface. So, how to solve this problem. In this article, we will discuss about how to solve such issues. The solution is Web workers. But what is a web worker? Let’s see. What is a Web Worker? A web worker is an object consisting of Javascript codes which runs behind the web page ...
Read MoreInternet Explorer 8 will not modify HTML5 tags in print stylesheet
While doing a print style sheet, you need various HTML5 tags like , , , etc., which are used for different layout options to your web page which is to be printed. Chrome, Firefox and Internet Explorer9 enables the users to use such HTML5 tags in their browsers. However, Internet Explorer 6-8, Safari 4x and other such older browsers does not support those tags due to which we can’t apply those layout options in the web page. So, how can we use those HTML5 tags in Internet Explorer 8? For this, you can use html5.shiv. First let’s understand about ...
Read MoreHow to draw a text with strokeText() in HTML5?
The stroketext() method renders the provided text using the current font, linewidth, and strokestyle properties at the specified place. The path won't be affected by any subsequent fill() or stroke() calls because this method draws directly to the canvas without changing the original route. Syntax Following is the syntax for stroke text in HTML ctx.strokeText(text, x, y, maxWidth); Where, X − The point on the x-axis where the text should start to be drawn, in pixels. Y − The baseline's y-axis coordinate, in pixels, at which to start rendering the text. text − A string containing the text ...
Read MoreFractional font sizes for HTML5 Canvas?
HTML5 canvas API enables the developers to write text on an HTML page in the different ways such as in a canvas. Different browsers provide various kinds of font sizes on the HTML5 canvas specially when the font sizes are floating numbers like 2.456 px, 3.4 px etc. So, how to apply fractional font size to a text in an HTML5 canvas? First, let’s see what HTML5 canvas is. What is a HTML5 Canvas? Basically, canvas is rectangular enclosed area in a web page. By default, it has no border and content. The canvas element of HTML5 enables the user ...
Read MoreCrop Canvas / Export HTML5 Canvas with certain width and height
HTML5 canvas allows the users to draw or create 2D graphics in any web page. Suppose you want to crop a part of the canvas created on the web page and export it to any other area of the web page, then you can do it using javascript. For example, you have an image in the canvas and you want to export a part of image of dimension 400px * 260px. In this article, we will learn how to execute the above using few javascript codes. To learn further, let us first considering understanding what HTML5 Canvas is What is ...
Read MoreCan I play the same sound more than once at the same time with HTML5?
Suppose you want to make a quiz app. In it, if you click the wrong option, an audio will be played in the background saying “wrong answer”. But if you click two or more options simultaneously which are wrong, you won’t be able to hear the sound as many times wrong answer is clicked at the same time. So, how to resolve this issue. In this article, you will see if you can play the same sound more than once at the same time with HTML5 or not. The answer is Yes!!! There are two methods for doing so. Let ...
Read MoreHow to avoid jQuery function conflict with any other JavaScript library
In this tutorial, we will learn how to avoid jQuery function conflict with any other JavaScript library. For the jQuery function, the $ symbol is simply an identifier. A $ followed by a selector indicates that it is a jQuery selector. It is given a shorter identification as $ to save time while writing longer syntax. It includes all of the functions needed by a jQuery object, such as animation(), show(), hide(), show(), CSS, and many others. Furthermore, $ is superior in terms of memory to jQuery because $ takes a byte while jQuery uses 6 bytes for the same ...
Read MoreHow to set the bottom position of 3D elements with JavaScript?
In this tutorial, we will learn how to set the bottom position of 3D elements with JavaScript. In a web page, handling a 3D element can be tricky. Using JavaScript, we had to set the top, bottom, sides, etc. To set the bottom position of 3D elements, we use the perspectiveOrigin property of an element’s style object. Using style.perspectiveOrigin Property In JavaScript, the style.perspectiveOrigin property is used to set the bottom position or base position of a 3D element. Firstly, we get the element object using the document.getElementById() method and then set the style.perspectiveOrigin property. ...
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