Try it Editor: canvas_height_width

Edit This Code :



<!DOCTYPE html>
<html>
<body>

<canvas id="myCanvas" width="200" height="200" style="border:1px solid">
Your browser does not support the HTML5 canvas tag.
</canvas>
<br>

<script>

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.fillStyle = "#92B901";
ctx.fillRect(50, 50, 100, 100);

function clearCanvas() {
    c.height = 300;
}

</script>

<button onclick="clearCanvas()">Clear canvas</button>

</body>
</html>

Result :

canvas_height_width_clear