HTML Canvas Drawing | w3school canvas
DrawontheCanvasWithJavaScriptAlldrawingontheHTMLcanvasmustbedonewithJavaScript:ExampleTryitYourself»[1]Step1:FindtheCanvasElementFirstofall,youmustfindthe
Draw on the Canvas With JavaScriptAll drawing on the HTML canvas must be done with JavaScript:
Example<script>var canvas = document.getElementById("myCanvas");var ctx = canvas.getContext("2d");ctx.fillStyle = "#FF0000";ctx.fillRect(0, 0, 150, 75);</script>
Try it Yourself »[1] Step 1: Find the Canvas ElementFirst of all, you must find the <canvas> element.
This is done by using the HTML DOM method getElementById():
var canvas = document.getElementById("myCanvas");
Step 2: Create a Drawing ObjectSecondly, you need a drawing object for the canvas.
The getContext() is a built-in HTML object, with properties and methods for drawing:
var ctx = canvas.getContext("2d");
Step 3: Draw on the CanvasFinally, you can draw on the canvas.
Set the fill style of the drawing object to the color red:
ctx.fillStyle = "#FF0000";
The fillStyle property can be a CSS color, a gradi...