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我努力學習HTML5的畫布。第一張圖片需要點擊七次,然後纔會出現貓咪圖片。最初,我將一個Click EventListener綁定到圖像上。出現貓咪gif吃餅乾後,我無法禁用點擊。有什麼建議麼?禁用單擊事件監聽
cat.html
<!DOCTYPE html>
<html>
<head>
<title>Cat Animation</title>
</head>
<body>
<div id="canvasDiv"></div>
<script type="text/javascript" src="cat.js"></script>
<script type="text/javascript">
prepareCanvas(document.getElementById("canvasDiv"), 700, 700);
document.getElementById("canvas").addEventListener("click", function(){console.log("clicked");loadImage("cat");console.log(total);console.log(currentFrame);}, false);
</script>
</body>
</html>
cat.js
var canvas;
var context;
var image;
var currentFrame = 0;
var frames = 4;
var width = 350;
var height = 300;
var total = 0
var finalFrame = 0;
function prepareCanvas(canvasDiv, canvasWidth, canvasHeight)
{
canvas = document.createElement('canvas');
canvas.setAttribute('width', canvasWidth);
canvas.setAttribute('height', canvasHeight);
canvas.setAttribute('id', 'canvas');
canvasDiv.appendChild(canvas);
context = canvas.getContext("2d");
canvas.width = canvas.width;//clears canvas
loadImage("cat");
};
function loadImage(name)
{
image = new Image();
image.src = "images/cat" + currentFrame +".png";
draw("one");
if (currentFrame == 3 && total == 1){
setInterval(finaldraw,110);
}
};
function draw(params)
{
image.onload = function(){
canvas.width = canvas.width;
context.drawImage(image,0,0);
currentFrame++;
if (currentFrame == 4) {
currentFrame = 0;
total++;
};
}
};
function finaldraw(){
document.getElementById("canvas").removeEventListener("click",function(){});
image.src = "images/eatsheet.png";
image.onload = function(){
context.drawImage(image,350*finalFrame,0,width,350,0,0,width,350);
if (finalFrame == frames) {
finalFrame = 0;
} else {
finalFrame = finalFrame + 1;
}
}
};
你有什麼樣的代碼?我不能真的想象,因爲我還是蠻新的節目:)非常感謝你能不能幫 – ikanyu
看[這裏](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/ removeEventListener) – Amit