JS添加文字水印_给luckysheet添加水印

作者：小丑西瓜9 | 2024-03-24 02:27:56

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给luckysheet添加水印

<html>
<script>
function watermark(str){
   var img = document.getElementById("img");
   var canvas=document.getElementById("cvs");
   var ctx=canvas.getContext("2d");
   ctx.drawImage(img,0,0);
   ctx.font="20px microsoft yahei";
   ctx.fillStyle = "rgba(255,255,255,0.5)";
   ctx.fillText(str,100,100);
}
</script>
<canvas id="cvs" width="1000" height="500" >
Your browser does not support the HTML5 canvas tag.
</canvas>
<image id="img" src="test.png" > </image>
<button onclick="watermark('Hello world')">add watermark</button>
</html>
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