SET(B)Q2
<! DOCTYPE html > < html > < head > < meta charset = utf-8 /> < title > Draw two intersecting rectangles, one of which has alpha transparency </ title > </ head > < body onload = " draw ();" > < canvas id = "canvas" width = "150" height = "150" ></ canvas > < script > function draw () { var canvas = document . getElementById ( "canvas" ); if ( canvas . getContext ) { var context = canvas . getContext ( "2d" ); context . fillStyle = "rgb(256,0,0)" ; context . fillRect ( 15 , 10 , 70 , 50 ); context . fillStyle = "rgba(0, 0, 200)" ; context . fillRect ( 35 , 30 , 70 , 50 ); } ...