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Cannot Call Method Drawimage Of Undefined

Shadows CanvasRenderingContext2D.shadowBlur Specifies the blurring effect. Compositing CanvasRenderingContext2D.globalAlpha Alpha value that is applied to shapes and images before they are composited onto the canvas. Why??? The canvas state The CanvasRenderingContext2D rendering context contains a variety of drawing style states (attributes for line styles, fill styles, shadow styles, text styles). his comment is here

You'll want to set this to a variable outside the onload method or access the global object (almost always the window object) from within the onload method. CanvasRenderingContext2D.ellipse() Adds an ellipse to the path which is centered at (x, y) position with the radii radiusX and radiusY starting at startAngle and ending at endAngle going in the given Read More » REPORT ERROR PRINT PAGE FORUM ABOUT × Your Suggestion: Your E-mail: Page address: Description: Submit × Thank You For Helping Us! Use CanvasRenderingContext2D.lineDashOffset instead. http://stackoverflow.com/questions/19321022/js-cant-call-method-drawimage-of-null

How can I avoid being chastised for a project I inherited which was already buggy, but I was told to add features instead of fixing it? CanvasRenderingContext2D.transform() Multiplies the current transformation matrix with the matrix described by its arguments. All Rights Reserved.

Why do some airlines have different flight numbers for IATA and ICAO? Examples might be simplified to improve reading and basic understanding. Wait... I have a canvas (#canvas) and an image (hero.png) on the page, and a JS file loaded at the end of the body.

Your message has been sent to W3Schools. The width of the clipped image Play it » sheight Optional. The angle argument represents a clockwise rotation angle and is expressed in radians. http://stackoverflow.com/questions/20815398/cannot-call-method-drawimage-of-null Might be null if it is not associated with a element.

Content is available under these licenses. Heroku throws an error like "Push rejected, Unauthorized access." Does every interesting photograph have a story to tell? asked 3 years ago viewed 2396 times active 3 years ago Get the weekly newsletter! How is it packed?

Join them; it only takes a minute: Sign up JavaScript Class Uncaught TypeError up vote 1 down vote favorite I am trying to build a JavaScript class, and I am having http://stackoverflow.com/questions/26569487/a-html5-canvas-error This is my pillow How can I check that the voltage output from this voltage divider is 2.25V? How can I avoid being chastised for a project I inherited which was already buggy, but I was told to add features instead of fixing it? CanvasRenderingContext2D.shadowOffsetX Horizontal distance the shadow will be offset.

Were the Smurfs the first to smurf their smurfs? http://electrictricycle.net/cannot-call/cannot-call-method-of-undefined-requirejs.html Add comments to a Python script and make it a bilingual Python/C++ “program” Can I switch from past tense to present tense in an epilogue? It repeats the source in the directions specified by the repetition argument. Not the answer you're looking for?

Surely the canvas element already exists because the DOM is ready? $(document).ready(function(){ function setup(){ var canvas = document.getElementById("canv1"); console.log(canvas.toString()); //this grabs hold of the canvas api var canvcontext = canvas.getContext('2D'); console.log(canvcontext.toString()); Browse other questions tagged jquery canvas or ask your own question. CanvasRenderingContext2D.arcTo() Adds an arc to the path with the given control points and radius, connected to the previous point by a straight line. weblink Thank you very much for this answer.

Internal APIs (chrome-context only) CanvasRenderingContext2D.asyncDrawXULElement() Renders a region of a XUL element into the canvas. CanvasRenderingContext2D.textAlign Text alignment setting. The original error was definitely caused by the missing context parameter ;) –Jonathan Gray Oct 26 '14 at 7:03 add a comment| Your Answer draft saved draft discarded Sign up

Is it unethical to poorly translate an exam from Dutch to English and then present it to the English speaking students?

This works: var game = {}; game.canvas = document.getElementById('canvas'); game.ctx = game.canvas.getContext("2d"); game.draw = function(){ game.ctx.drawImage(game.hero, 200, 200); } game.hero = new Image(); game.hero.src = "hero.png"; game.hero.onload = game.draw; And this On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? CanvasRenderingContext2D.getLineDash() Returns the current line dash pattern array containing an even number of non-negative numbers. CanvasRenderingContext2D.webkitImageSmoothingEnabled Use CanvasRenderingContext2D.imageSmoothingEnabled instead.

CanvasRenderingContext2D.rect() Creates a path for a rectangle at position (x, y) with a size that is determined by width and height. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. Does every interesting photograph have a story to tell? check over here Shouldn't it be WBNotification.prototype? –alex Oct 11 '13 at 14:50 which line do you mean? –Makerimages Oct 11 '13 at 14:53 ???

Do students wear muggle clothing while not in classes at Hogwarts (like they do in the films)? The problem is that it keeps on giving this error Cannot call method 'drawImage' of null. Solutions? Where in the analytic hierarchy is the theory of true set theory?

I just saw this bird outside my apartment. Related 557How to clear the canvas for redrawing250Resizing an image in an HTML5 canvas625Using HTML5/Canvas/JavaScript to take screenshots260HTML5 Canvas vs. How can I avoid being chastised for a project I inherited which was already buggy, but I was told to add features instead of fixing it? CanvasRenderingContext2D.mozDashOffset Specifies where to start a dash array on a line. .

Possible values: ltr, rtl, inherit (default). Can a countable number of intersections of subsets or their complements be the null set? Where in the analytic hierarchy is the theory of true set theory? Not the answer you're looking for?

Join them; it only takes a minute: Sign up JS cant call method drawImage of null up vote -1 down vote favorite I got this lil file /* WaterBall API notification I am now getting the context in my variable. –KolKurtz Apr 10 '13 at 14:29 1 Pls mark as correct answer if possible (: –Chris Apr 11 '13 at 7:15