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HTML Canvas measure text width difference

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  • 1 leis an bhfadhb seo
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HTML Canvas measure text width value is different from other browsers for Courier New font family.

Please find the width value comparison of the browsers. Google Chrome width: 19.203125 Firefox width: 20 Internet Explorer: 19 Edge: 19.203125

Sample Code:

<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"></canvas>
<script>
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.font = "8px courier new";
var txt = "Code"
ctx.fillText("width:" + ctx.measureText(txt).width, 10, 50);
ctx.fillText(txt, 10, 100);
</script>
</body>
</html>
HTML Canvas measure text width value is different from other browsers for Courier New font family. Please find the width value comparison of the browsers. Google Chrome width: 19.203125 Firefox width: 20 Internet Explorer: 19 Edge: 19.203125 Sample Code: <pre><nowiki><!DOCTYPE html> <html> <body> <canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"></canvas> <script> var c = document.getElementById("myCanvas"); var ctx = c.getContext("2d"); ctx.font = "8px courier new"; var txt = "Code" ctx.fillText("width:" + ctx.measureText(txt).width, 10, 50); ctx.fillText(txt, 10, 100); </script> </body> </html></nowiki></pre>

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Maybe ask advice at a web development oriented forum.