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javascript - 图像作为按钮

转载 作者:行者123 更新时间:2023-12-02 18:57:49 24 4
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我想要将添加到 Canvas 中的图像用作按钮。当我单击图像时,必须显示警报。还必须禁止单击 Canvas 的其余部分。我怎样才能做到这一点?谢谢。

<script>
window.onload = function(){
var canvas = document.getElementById("myCanvas");
var context = canvas.getContext("2d");
var quizbg = new Image();
quizbg.src = "basla.png";
context.drawImage(quizbg,0,0);
}

<script>

<body>
<div id="ccontainer">
<canvas id="myCanvas" width="600" height="400"></canvas>
</div>
</body>

最佳答案

这样做,

<script>
window.onload = function(){
var canvas = document.getElementById("myCanvas");
var context = canvas.getContext("2d");
var quizbg = new Image();
quizbg.src = "basla.png";
quizbg.onload = function() {
context.drawImage(quizbg,0,0);
}
canvas.onclick= function() {
alert('Bike');
canvas.onclick = false;
}
}
</script>



<body>
<div id="ccontainer">
<canvas id="myCanvas" width="600" height="400"></canvas>
</div>
</body>

工作示例,http://jsfiddle.net/wcxc2/

关于javascript - 图像作为按钮,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15158203/

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