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HTML | canvas clearRect() Method

  • Last Updated : 29 Apr, 2019

The clearRect() method is used to clear the specified pixels within a given rectangle.

Syntax:

context.clearRect( x, y, width, height )

Parameters:

  • x: It stores the x-coordinate of the top-left corner of the rectangle.
  • y: It stores the y-coordinate of the top-left corner of the rectangle.
  • width: It stores the width in pixel.
  • height: It stores the height in pixel.

Example-1:




<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML canvas clearRect() Method
    </title>
</head>
  
<body>
    <canvas id="GFG"
            width="500"
            height="300">
  </canvas>
  
    <script>
        var x = document.getElementById("GFG");
        var contex = x.getContext("2d");
        contex.fillRect(50, 50, 350, 200);
        contex.clearRect(100, 100, 250, 100);
        contex.stroke();
    </script>
</body>
  
</html>

Output:



Example-2:




<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML canvas clearRect() Method
    </title>
</head>
  
<body>
    <canvas id="GFG"
            width="500"
            height="300">
  </canvas>
  
    <script>
        var x = document.getElementById("GFG");
        var contex = x.getContext("2d");
        contex.fillStyle = "green";
        contex.fillRect(50, 50, 350, 200);
        contex.clearRect(130, 60, 250, 100);
        contex.stroke();
    </script>
  
</body>
  
</html>

Output:

Supported Browsers:

  • Google Chrome
  • Internet Explorer 9.0
  • Firefox
  • Safari
  • Opera

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