rgba.js Example File
script/context2d/scripts/rgba.js
var ctx = document.getElementById('tutorial').getContext('2d');
// Draw background
ctx.fillStyle = 'rgb(255,221,0)';
ctx.fillRect(0,0,150,37.5);
ctx.fillStyle = 'rgb(102,204,0)';
ctx.fillRect(0,37.5,150,37.5);
ctx.fillStyle = 'rgb(0,153,255)';
ctx.fillRect(0,75,150,37.5);
ctx.fillStyle = 'rgb(255,51,0)';
ctx.fillRect(0,112.5,150,37.5);
// Draw semi transparent rectangles
for (i=0;i<10;i++){
ctx.fillStyle = 'rgba(255,255,255,'+(i+1)/10+')';
for (j=0;j<4;j++){
ctx.fillRect(5+i*14,5+j*37.5,14,27.5)
}
}
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