Changing the Rectangle Color, Shape, and Position
<!DOCTYPE html> <head> <style> body {//from w w w. j a v a 2 s . c om background: #dddddd; } #canvas { position: absolute; left: 0px; top: 0px; margin: 20px; background: #ffffff; border: thin solid #aaaaaa; } </style> </head> <body> <canvas id='canvas' width='500' height='500'> Canvas not supported </canvas> <script> let context = document.querySelector('#canvas').getContext('2d'); context.strokeStyle = 'lightgrey'; context.fillStyle = 'dimgrey'; context.lineWidth = 5; context.rect(75, 50, canvas.width - 150, canvas.height - 100); context.stroke(); context.fill(); </script> </script> </body> </html>