html5 canvas drag and drop

There are 11 ways to combine images in HTML5. You just need to set them to context. globalCompositeOperation. I have made a small example here to prove the results of various image combinations.The HTML code is very simple. There are two controls. One is the drop-down list, which allows users to select the combination method. Once the user makes the selection, the js function draw (id) is executed ), in thi

There are 11 ways to combine images in HTML5. You just need to set them to context. globalCompositeOperation. I have made a small example here to prove the results of various image combinations. The HTML code is very simple. There are two controls. One is the drop-down list, which allows users to select the combination method. Once the user makes the selection, the js function draw (id) is executed ), in th

This is just a simple JavaScript and HTML5 applet, did not realize the Man-machine battle.A two-dimensional array of gobang checkerboard drop points. The elements of the array correspond to drop points. For example, an array element value of 0 means that the element corresponding to the drop point does not have a pawn,

Mainly HTML5 drag and drop (Drag and drop)Example (do not need to set the ID for div): DOCTYPE HTML> HTML> Head> Scripttype= "Text/javascript"> functionAllowDrop (EV) {ev.preventdefault (); } varSrcdiv= NULL; functionDrag (ev,divdom) {Srcdiv=Divdom; Ev.dataTransfer.se

In fact, it is very easy to support drag and drop in wpf. You can use drag events or custom mouse events.Today, we will share a drag-and-drop slide effect with mouse clicks and up events.First, define a ScrollViewer in xaml. The code is as follows:Copy code Xmlns = "

(); }); } } } }] }); Myapp.directive (rubydrageventdirectives);}) ();Js->mydrag.js(function () { "use strict" if (window.angular) { angular.module ("MYAPP"). Controller ("Mydragcontroller" , Mydragcontroller); Mydragcontroller. $inject = [' $scope ']; function Mydragcontroller ($scope) { $scope. Vm.dragstart = function (e) { e.datatransfer.setdata ("Text", e.target.id); };

How to use HTML5 Canvas to make water ripple effectToday, we continue to share examples of the effects of JavaScript implementations, and this article describes the use of JavaScript for water ripple effects. The water wave effect takes the picture as the background, the click image anywhere will trigger. Sometimes, we can create a very interesting solution using normal Javascript . Online Demo Source Down

control1_x = 187;var control1_y = 0;var control2_x = 429;var control2_y = 380;var endpointx = 365;var endpointy = 50;Drawing curvesContext.beziercurveto (control1_x, control1_y, control2_x, control2_y, Endpointx, Endpointy);Context.stroke (); (2) online generation of Bezier curvesAddress: http://blogs.sitepointstatic.com/examples/tech/canvas-curves/bezier-curve.htmlWe can drag the control point, start poi

Image Mosaic blur effects based on HTML5 Canvas, Mosaic blur is often applied to images or videos. Today we will use the HTML5 Canvas technology to achieve mosaic blur. In the demonstration, we can drag the slider to set the degree of mosaic blur. You can observe the effect

Mosaic blur is often used in images or videos, and today we use HTML5 Canvas technology to achieve the mosaic blur effect of a picture. In the demo we can drag the slider to set the degree of mosaic blur, you can see the image after the mosaic effect under different values. HTML5 is indeed very powerful. As follows:Onl

In the previous article, "File talk-drag-and-drop upload," I made a static drag-and-drop upload interface, drag-and-drop files to the display area release, you can display the basic information dragged into the file. This article