Zadatak4

<html>
<body>
<canvas id="myCanvas" width="200" height="100">
</canvas>
<script>
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.fillStyle="red";
ctx.fillRect(10,10,150,80);
</script>
<canvas id="myCanv" width="200" height="100">
</canvas>
<script>
var c=document.getElementById("myCanv");
var ctx=c.getContext("2d");
// Create gradient
var grd=ctx.createLinearGradient(0,0,200,0);
grd.addColorStop(0,"black");
grd.addColorStop(1,"white");
// Fill with gradient
ctx.fillStyle=grd;
ctx.fillRect(10,10,150,80);
</script>
<br>
<canvas id="myPrettyCanvas" width="200" height="100"></canvas>
    <script type="text/javascript">
      var canvasId = 'myPrettyCanvas',
          canvas = document.getElementById(canvasId),
          ctx = canvas.getContext('2d'),
          grd;
      // Create gradient
      grd = ctx.createLinearGradient(0.000, 150.000, 300.000, 150.000);
      // Add colors
      grd.addColorStop(0.000, 'rgba(255, 0, 0, 1.000)');
      grd.addColorStop(0.150, 'rgba(255, 0, 255, 1.000)');
      grd.addColorStop(0.330, 'rgba(0, 0, 255, 1.000)');
      grd.addColorStop(0.490, 'rgba(0, 255, 255, 1.000)');
      grd.addColorStop(0.670, 'rgba(0, 255, 0, 1.000)');
      grd.addColorStop(0.840, 'rgba(255, 255, 0, 1.000)');
      grd.addColorStop(1.000, 'rgba(255, 0, 0, 1.000)');
      // Fill with gradient
      ctx.fillStyle = grd;
      ctx.fillRect(10,10,150,80);
    </script>
<canvas id="myCanva" width="200" height="100">
</canvas>
<script>
var c=document.getElementById("myCanva");
var ctx=c.getContext("2d");
ctx.font="40px Arial";
ctx.strokeText("Smile!",20,60)
var grd=ctx.createLinearGradient(0,0,200,10);
grd.addColorStop(0,"red");
grd.addColorStop(0.3,"yellow");
grd.addColorStop(0.6,"green");
grd.addColorStop(1,"blue");
ctx.strokeStyle=grd;
ctx.strokeText("Smile!",20,60);
 </script>
</body>
</html>