<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
#canvasId {
background-color: red;
}
</style>
</head>
<body>
<div>Canvas</div>
<canvas id="canvasId" width="200" height="200"></canvas>
<img id="imgId" src="" />
<script>
var c=document.getElementById("canvasId");
var ctx=c.getContext("2d");
ctx.fillStyle="yellow";
ctx.fillRect(0,0,60,60);
var cimg = function() {
var imgSrc = document.getElementById("canvasId").toDataURL("image/png");
document.getElementById("imgId").src = imgSrc;
console.log(imgSrc);
}
cimg();
</script>
</html>
请使用canvas绘制,画布尺寸为200px_200px,在画布中添加一个60 _ 60的黄色正方形 并在画布顶部添加一行黑色文字“canvas” 将canvas的内容输出图片设置到img元素上
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转载自blog.csdn.net/liulang68/article/details/121273776
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